/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:42:13,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:42:13,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:42:13,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:42:13,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:42:13,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:42:13,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:42:13,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:42:13,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:42:13,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:42:13,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:42:13,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:42:13,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:42:13,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:42:13,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:42:13,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:42:13,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:42:13,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:42:13,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:42:13,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:42:13,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:42:13,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:42:13,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:42:13,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:42:13,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:42:13,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:42:13,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:42:13,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:42:13,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:42:13,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:42:13,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:42:13,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:42:13,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:42:13,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:42:13,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:42:13,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:42:14,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:42:14,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:42:14,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:42:14,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:42:14,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:42:14,003 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 [2020-09-25 05:42:14,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:42:14,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:42:14,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:42:14,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:42:14,033 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:42:14,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:42:14,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:42:14,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:42:14,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:42:14,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:42:14,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:42:14,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:42:14,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:42:14,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:42:14,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:42:14,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:42:14,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:42:14,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:42:14,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:42:14,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:42:14,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:42:14,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:42:14,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:42:14,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:42:14,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:42:14,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:42:14,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:42:14,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:42:14,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:42:14,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 05:42:14,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:42:14,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:42:14,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:42:14,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:42:14,617 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:42:14,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 05:42:14,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2e9fd41/b359b054a2ec42b4850a88a7ddd19a8b/FLAG9e5f90233 [2020-09-25 05:42:15,267 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:42:15,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 05:42:15,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2e9fd41/b359b054a2ec42b4850a88a7ddd19a8b/FLAG9e5f90233 [2020-09-25 05:42:15,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2e9fd41/b359b054a2ec42b4850a88a7ddd19a8b [2020-09-25 05:42:15,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:42:15,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:42:15,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:42:15,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:42:15,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:42:15,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:15,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5500f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15, skipping insertion in model container [2020-09-25 05:42:15,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:15,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:42:15,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:42:15,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:42:15,934 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:42:15,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:42:15,975 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:42:15,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15 WrapperNode [2020-09-25 05:42:15,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:42:15,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:42:15,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:42:15,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:42:16,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (1/1) ... [2020-09-25 05:42:16,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:42:16,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:42:16,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:42:16,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:42:16,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (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 [2020-09-25 05:42:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:42:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:42:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:42:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 05:42:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:42:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:42:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:42:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:42:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 05:42:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:42:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:42:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:42:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:42:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:42:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:42:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:42:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:42:16,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:42:16,542 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 05:42:16,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:42:16 BoogieIcfgContainer [2020-09-25 05:42:16,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:42:16,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:42:16,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:42:16,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:42:16,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:42:15" (1/3) ... [2020-09-25 05:42:16,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6f7e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:42:16, skipping insertion in model container [2020-09-25 05:42:16,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:42:15" (2/3) ... [2020-09-25 05:42:16,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6f7e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:42:16, skipping insertion in model container [2020-09-25 05:42:16,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:42:16" (3/3) ... [2020-09-25 05:42:16,559 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 05:42:16,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:42:16,584 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:42:16,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:42:16,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:42:16,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:42:16,662 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:42:16,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:42:16,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:42:16,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:42:16,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:42:16,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:42:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 05:42:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 05:42:16,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:16,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:16,696 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:16,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 05:42:16,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:16,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126115333] [2020-09-25 05:42:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:16,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:17,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:42:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 05:42:17,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:17,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:17,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 05:42:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:42:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:17,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:17,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:17,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:17,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:42:17,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:17,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:17,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:17,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:42:17,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:42:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:17,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:42:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:42:17,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126115333] [2020-09-25 05:42:17,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:17,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:42:17,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301471858] [2020-09-25 05:42:17,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:42:17,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:42:17,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:42:17,362 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-09-25 05:42:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:17,611 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 05:42:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:42:17,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 05:42:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:17,627 INFO L225 Difference]: With dead ends: 94 [2020-09-25 05:42:17,627 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 05:42:17,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:42:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 05:42:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-09-25 05:42:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 05:42:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-09-25 05:42:17,685 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2020-09-25 05:42:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:17,686 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-09-25 05:42:17,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:42:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-09-25 05:42:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 05:42:17,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:17,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:17,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:42:17,689 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash 31734745, now seen corresponding path program 1 times [2020-09-25 05:42:17,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:17,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132512629] [2020-09-25 05:42:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:42:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 05:42:18,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:18,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:42:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:42:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:42:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:18,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:18,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:42:18,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:18,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:18,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:18,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:42:18,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:42:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:18,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:42:18,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132512629] [2020-09-25 05:42:18,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:18,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:42:18,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051553930] [2020-09-25 05:42:18,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:42:18,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:18,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:42:18,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:42:18,167 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2020-09-25 05:42:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:18,352 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-09-25 05:42:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:42:18,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 05:42:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:18,356 INFO L225 Difference]: With dead ends: 83 [2020-09-25 05:42:18,356 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 05:42:18,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:42:18,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 05:42:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 05:42:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 05:42:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 05:42:18,374 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 05:42:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:18,375 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 05:42:18,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:42:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 05:42:18,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:42:18,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:18,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:18,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:42:18,377 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:18,378 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 05:42:18,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:18,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136584525] [2020-09-25 05:42:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:19,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:19,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:42:19,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:42:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-09-25 05:42:19,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:19,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:42:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 05:42:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:42:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:19,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:19,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:42:19,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:19,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:20,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:20,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:42:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 05:42:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:20,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:42:20,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136584525] [2020-09-25 05:42:20,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:20,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:42:20,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983995956] [2020-09-25 05:42:20,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:42:20,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:20,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:42:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:42:20,056 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-09-25 05:42:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:20,346 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 05:42:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:42:20,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 05:42:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:20,349 INFO L225 Difference]: With dead ends: 92 [2020-09-25 05:42:20,349 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 05:42:20,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:42:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 05:42:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-09-25 05:42:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 05:42:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-09-25 05:42:20,373 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 36 [2020-09-25 05:42:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:20,373 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-09-25 05:42:20,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:42:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-09-25 05:42:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 05:42:20,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:20,382 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:42:20,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:42:20,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:20,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:20,383 INFO L82 PathProgramCache]: Analyzing trace with hash -490137063, now seen corresponding path program 2 times [2020-09-25 05:42:20,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:20,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744430816] [2020-09-25 05:42:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:22,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:22,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:42:22,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:42:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2342 [2020-09-25 05:42:22,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:22,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:42:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:42:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:42:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:22,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:22,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:42:22,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:22,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:22,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:22,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:42:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:42:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:22,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:42:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:42:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:42:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:42:22,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744430816] [2020-09-25 05:42:22,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:22,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:42:22,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724827023] [2020-09-25 05:42:22,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:42:22,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:42:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:42:22,862 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 7 states. [2020-09-25 05:42:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:23,136 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-09-25 05:42:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:42:23,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 05:42:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:23,138 INFO L225 Difference]: With dead ends: 101 [2020-09-25 05:42:23,139 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 05:42:23,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:42:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 05:42:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-09-25 05:42:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:42:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-25 05:42:23,148 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 43 [2020-09-25 05:42:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:23,149 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-25 05:42:23,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:42:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-25 05:42:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 05:42:23,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:23,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:42:23,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:42:23,151 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:23,152 INFO L82 PathProgramCache]: Analyzing trace with hash 589608213, now seen corresponding path program 1 times [2020-09-25 05:42:23,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:23,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981710974] [2020-09-25 05:42:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:26,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:28,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:42:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:42:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:42:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:28,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:28,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 05:42:28,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:42:28,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:28,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:42:28,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:28,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:28,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:28,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:42:28,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:28,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 05:42:28,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:28,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:42:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 05:42:28,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981710974] [2020-09-25 05:42:28,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:28,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:42:28,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843732571] [2020-09-25 05:42:28,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:42:28,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:28,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:42:28,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:42:28,569 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 11 states. [2020-09-25 05:42:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:29,088 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2020-09-25 05:42:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:42:29,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-09-25 05:42:29,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:29,091 INFO L225 Difference]: With dead ends: 103 [2020-09-25 05:42:29,091 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 05:42:29,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:42:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 05:42:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2020-09-25 05:42:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 05:42:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-09-25 05:42:29,102 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 49 [2020-09-25 05:42:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:29,103 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-09-25 05:42:29,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:42:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-09-25 05:42:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 05:42:29,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:29,105 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:42:29,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:42:29,105 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1322965789, now seen corresponding path program 1 times [2020-09-25 05:42:29,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:29,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377157836] [2020-09-25 05:42:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:42:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:42:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3298 [2020-09-25 05:42:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:32,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:42:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:42:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:42:32,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:32,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:32,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:32,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:42:32,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:32,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:32,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:32,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:32,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:32,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:42:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 05:42:32,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:32,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:32,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:42:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 05:42:32,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377157836] [2020-09-25 05:42:32,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:32,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:42:32,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208186184] [2020-09-25 05:42:32,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:42:32,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:32,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:42:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:42:32,648 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 5 states. [2020-09-25 05:42:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:32,855 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2020-09-25 05:42:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:42:32,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-09-25 05:42:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:32,858 INFO L225 Difference]: With dead ends: 120 [2020-09-25 05:42:32,858 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 05:42:32,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:42:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 05:42:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-09-25 05:42:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 05:42:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-25 05:42:32,882 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 50 [2020-09-25 05:42:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:32,883 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-25 05:42:32,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:42:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-25 05:42:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:42:32,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:32,884 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] [2020-09-25 05:42:32,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:42:32,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:32,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:32,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1502817233, now seen corresponding path program 1 times [2020-09-25 05:42:32,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:32,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809399078] [2020-09-25 05:42:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:37,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:37,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:42:37,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:42:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:42:37,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:37,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:42:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:42:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:42:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:37,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:42:37,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:37,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:38,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:38,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:42:38,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:38,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 05:42:38,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:38,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:38,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:42:38,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:38,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:42:38,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:42:38,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809399078] [2020-09-25 05:42:38,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:42:38,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:42:38,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571565750] [2020-09-25 05:42:38,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:42:38,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:38,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:42:38,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:42:38,116 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-09-25 05:42:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:38,220 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-09-25 05:42:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:42:38,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-09-25 05:42:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:38,221 INFO L225 Difference]: With dead ends: 79 [2020-09-25 05:42:38,222 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 05:42:38,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:42:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 05:42:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-09-25 05:42:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 05:42:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-09-25 05:42:38,229 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 54 [2020-09-25 05:42:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:38,229 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-09-25 05:42:38,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:42:38,230 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-09-25 05:42:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 05:42:38,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:38,231 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:42:38,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:42:38,231 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:38,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:38,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2041587548, now seen corresponding path program 1 times [2020-09-25 05:42:38,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:38,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457470618] [2020-09-25 05:42:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:38,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:43,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 05:42:43,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:42:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:42:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:43,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:42:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:42:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:42:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:43,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:43,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 05:42:43,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 05:42:43,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:43,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:42:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:42:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:42:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:43,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:42:43,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:42:43,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:43,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:42:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:42:43,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457470618] [2020-09-25 05:42:43,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:43,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:42:43,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476490801] [2020-09-25 05:42:43,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:42:43,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:43,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:42:43,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:42:43,642 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 11 states. [2020-09-25 05:42:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:43,919 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-09-25 05:42:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:42:43,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-25 05:42:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:43,921 INFO L225 Difference]: With dead ends: 113 [2020-09-25 05:42:43,921 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 05:42:43,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:42:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 05:42:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-09-25 05:42:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 05:42:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-09-25 05:42:43,928 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 61 [2020-09-25 05:42:43,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:43,929 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-09-25 05:42:43,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:42:43,929 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-09-25 05:42:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:42:43,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:43,930 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:42:43,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:42:43,931 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1808890712, now seen corresponding path program 2 times [2020-09-25 05:42:43,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:43,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79905748] [2020-09-25 05:42:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:44,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:48,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:48,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:42:48,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:42:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:42:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:48,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:42:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:42:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:48,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:48,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:48,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:42:48,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:48,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:49,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:42:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 05:42:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:49,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:42:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:42:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:42:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:49,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:42:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:49,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:49,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:49,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:42:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:42:49,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:49,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:42:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:42:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 05:42:49,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79905748] [2020-09-25 05:42:49,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:49,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:42:49,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855386272] [2020-09-25 05:42:49,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:42:49,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:49,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:42:49,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:42:49,365 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 11 states. [2020-09-25 05:42:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:49,679 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2020-09-25 05:42:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:42:49,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 05:42:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:49,681 INFO L225 Difference]: With dead ends: 121 [2020-09-25 05:42:49,681 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 05:42:49,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:42:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 05:42:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-09-25 05:42:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 05:42:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-09-25 05:42:49,688 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 67 [2020-09-25 05:42:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:49,689 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-09-25 05:42:49,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:42:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-09-25 05:42:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:42:49,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:49,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:42:49,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:42:49,690 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:49,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:49,691 INFO L82 PathProgramCache]: Analyzing trace with hash 957014612, now seen corresponding path program 3 times [2020-09-25 05:42:49,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:49,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706288665] [2020-09-25 05:42:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:49,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:52,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 05:42:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 05:42:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:42:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:54,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:42:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:42:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:42:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:54,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:42:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:54,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:42:54,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:54,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:42:54,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:54,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:54,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:42:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:54,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:42:54,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:42:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 05:42:54,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:54,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:42:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 05:42:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:54,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:42:54,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:42:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:42:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:42:54,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:42:54,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:42:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:42:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:42:54,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:42:54,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:42:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 05:42:54,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706288665] [2020-09-25 05:42:54,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:42:54,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:42:54,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654373807] [2020-09-25 05:42:54,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:42:54,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:42:54,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:42:54,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:42:54,980 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 9 states. [2020-09-25 05:42:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:42:55,226 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2020-09-25 05:42:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:42:55,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 05:42:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:42:55,228 INFO L225 Difference]: With dead ends: 114 [2020-09-25 05:42:55,228 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 05:42:55,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:42:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 05:42:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2020-09-25 05:42:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 05:42:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-25 05:42:55,242 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 73 [2020-09-25 05:42:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:42:55,242 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-25 05:42:55,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:42:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-25 05:42:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 05:42:55,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:42:55,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:42:55,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:42:55,245 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:42:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:42:55,246 INFO L82 PathProgramCache]: Analyzing trace with hash -279839062, now seen corresponding path program 4 times [2020-09-25 05:42:55,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:42:55,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630297772] [2020-09-25 05:42:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:42:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:42:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:42:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 05:43:00,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:43:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:43:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:00,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:43:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:43:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:43:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:00,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:43:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:00,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:00,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:43:00,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:43:00,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:00,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:43:00,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:43:00,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 05:43:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:43:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 05:43:00,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:43:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:43:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 05:43:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:00,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:43:00,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 05:43:00,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:43:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:43:00,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:43:00,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:43:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:43:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 05:43:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:43:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:43:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 05:43:00,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630297772] [2020-09-25 05:43:00,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:43:00,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 05:43:00,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075422121] [2020-09-25 05:43:00,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:43:00,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:43:00,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:43:00,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:43:00,855 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 13 states. [2020-09-25 05:43:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:43:01,343 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2020-09-25 05:43:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:43:01,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2020-09-25 05:43:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:43:01,345 INFO L225 Difference]: With dead ends: 141 [2020-09-25 05:43:01,345 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 05:43:01,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-09-25 05:43:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 05:43:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-09-25 05:43:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 05:43:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-09-25 05:43:01,353 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 80 [2020-09-25 05:43:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:43:01,353 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-09-25 05:43:01,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:43:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-09-25 05:43:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 05:43:01,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:43:01,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:43:01,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:43:01,355 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:43:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:43:01,355 INFO L82 PathProgramCache]: Analyzing trace with hash -614411986, now seen corresponding path program 5 times [2020-09-25 05:43:01,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:43:01,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921721642] [2020-09-25 05:43:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:43:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:43:01,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:43:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking...