/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:06:17,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:06:17,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:06:17,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:06:17,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:06:17,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:06:17,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:06:17,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:06:17,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:06:17,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:06:17,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:06:17,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:06:17,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:06:17,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:06:17,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:06:17,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:06:17,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:06:17,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:06:17,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:06:17,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:06:17,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:06:17,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:06:17,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:06:17,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:06:17,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:06:17,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:06:17,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:06:17,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:06:17,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:06:17,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:06:17,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:06:17,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:06:17,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:06:17,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:06:17,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:06:17,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:06:18,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:06:18,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:06:18,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:06:18,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:06:18,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:06:18,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:06:18,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:06:18,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:06:18,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:06:18,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:06:18,043 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:06:18,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:06:18,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:06:18,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:06:18,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:06:18,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:06:18,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:06:18,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:06:18,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:06:18,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:06:18,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:06:18,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:06:18,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:06:18,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:06:18,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:06:18,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:06:18,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:06:18,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:06:18,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:06:18,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:06:18,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:06:18,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:06:18,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:06:18,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:06:18,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:06:18,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:06:18,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:06:18,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:06:18,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:06:18,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:06:18,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:06:18,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2020-10-26 19:06:18,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee79566e6/c6631e33067442aba6998a7019076d6a/FLAG7d9350411 [2020-10-26 19:06:19,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:06:19,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const3.c [2020-10-26 19:06:19,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee79566e6/c6631e33067442aba6998a7019076d6a/FLAG7d9350411 [2020-10-26 19:06:19,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee79566e6/c6631e33067442aba6998a7019076d6a [2020-10-26 19:06:19,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:06:19,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:06:19,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:06:19,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:06:19,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:06:19,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:06:19" (1/1) ... [2020-10-26 19:06:19,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b4309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:19, skipping insertion in model container [2020-10-26 19:06:19,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:06:19" (1/1) ... [2020-10-26 19:06:19,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:06:19,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:06:20,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:06:20,072 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:06:20,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:06:20,117 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:06:20,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20 WrapperNode [2020-10-26 19:06:20,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:06:20,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:06:20,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:06:20,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:06:20,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... [2020-10-26 19:06:20,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:06:20,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:06:20,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:06:20,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:06:20,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:06:20,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:06:20,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:06:20,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:06:20,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:06:20,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:06:20,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:06:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:06:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:06:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:06:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:06:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:06:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:06:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-26 19:06:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:06:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:06:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:06:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:06:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:06:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:06:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:06:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:06:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:06:20,720 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:06:20,720 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-26 19:06:20,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:20 BoogieIcfgContainer [2020-10-26 19:06:20,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:06:20,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:06:20,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:06:20,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:06:20,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:06:19" (1/3) ... [2020-10-26 19:06:20,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ff43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:20, skipping insertion in model container [2020-10-26 19:06:20,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:20" (2/3) ... [2020-10-26 19:06:20,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ff43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:20, skipping insertion in model container [2020-10-26 19:06:20,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:20" (3/3) ... [2020-10-26 19:06:20,733 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const3.c [2020-10-26 19:06:20,746 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:06:20,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:06:20,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:06:20,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:06:20,835 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:06:20,835 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:06:20,836 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:06:20,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:06:20,839 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:06:20,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:06:20,840 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:06:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-26 19:06:20,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:06:20,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:20,904 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] [2020-10-26 19:06:20,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:20,920 INFO L82 PathProgramCache]: Analyzing trace with hash -645642689, now seen corresponding path program 1 times [2020-10-26 19:06:20,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:20,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130145162] [2020-10-26 19:06:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:22,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 19:06:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:06:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2233 [2020-10-26 19:06:23,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:06:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:06:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:06:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:06:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:06:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:06:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:06:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:06:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:06:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:06:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:06:23,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130145162] [2020-10-26 19:06:23,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:06:23,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:06:23,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126110570] [2020-10-26 19:06:23,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:06:23,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:06:23,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:06:23,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:06:23,512 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-26 19:06:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:06:23,698 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2020-10-26 19:06:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:06:23,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-26 19:06:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:06:23,709 INFO L225 Difference]: With dead ends: 76 [2020-10-26 19:06:23,709 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 19:06:23,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:06:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 19:06:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-26 19:06:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 19:06:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-26 19:06:23,762 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 25 [2020-10-26 19:06:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:06:23,762 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-26 19:06:23,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:06:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-26 19:06:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 19:06:23,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:23,764 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] [2020-10-26 19:06:23,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:06:23,765 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:23,765 INFO L82 PathProgramCache]: Analyzing trace with hash -640041645, now seen corresponding path program 1 times [2020-10-26 19:06:23,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:23,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321031479] [2020-10-26 19:06:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:28,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-26 19:06:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:06:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 19:06:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:06:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:06:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 19:06:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:06:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:28,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:28,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:06:28,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:06:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:06:28,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:06:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:06:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:06:28,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:06:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:06:28,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321031479] [2020-10-26 19:06:28,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:06:28,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:06:28,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139483316] [2020-10-26 19:06:28,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:06:28,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:06:28,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:06:28,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:06:28,887 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 5 states. [2020-10-26 19:06:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:06:29,171 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2020-10-26 19:06:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:06:29,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-26 19:06:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:06:29,174 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:06:29,175 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 19:06:29,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:06:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 19:06:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-26 19:06:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 19:06:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-26 19:06:29,192 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 27 [2020-10-26 19:06:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:06:29,194 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-26 19:06:29,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:06:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-26 19:06:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:06:29,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:29,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:06:29,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:06:29,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash -265634913, now seen corresponding path program 1 times [2020-10-26 19:06:29,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:29,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847843302] [2020-10-26 19:06:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:06:34,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:06:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:06:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:06:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:06:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 19:06:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:34,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:06:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:34,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:34,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:06:34,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:06:34,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:06:34,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:34,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:06:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:06:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:06:34,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 19:06:34,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847843302] [2020-10-26 19:06:34,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:06:34,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 19:06:34,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630590914] [2020-10-26 19:06:34,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:06:34,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:06:34,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:06:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:06:34,337 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 6 states. [2020-10-26 19:06:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:06:34,688 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-10-26 19:06:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 19:06:34,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-26 19:06:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:06:34,691 INFO L225 Difference]: With dead ends: 84 [2020-10-26 19:06:34,692 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 19:06:34,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:06:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 19:06:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-26 19:06:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 19:06:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-26 19:06:34,717 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 39 [2020-10-26 19:06:34,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:06:34,717 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-26 19:06:34,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:06:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-26 19:06:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-26 19:06:34,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:34,724 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 19:06:34,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:06:34,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:34,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:34,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2136437933, now seen corresponding path program 2 times [2020-10-26 19:06:34,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:34,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108173852] [2020-10-26 19:06:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:38,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-26 19:06:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:06:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 19:06:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-26 19:06:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:06:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-26 19:06:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:06:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:41,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:41,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:06:41,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:06:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:06:41,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:06:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:06:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:06:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:06:41,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108173852] [2020-10-26 19:06:41,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:06:41,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 19:06:41,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441485476] [2020-10-26 19:06:41,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 19:06:41,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:06:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 19:06:41,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:06:41,350 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 23 states. [2020-10-26 19:06:41,530 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-26 19:06:42,699 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-26 19:06:43,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:06:43,829 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-10-26 19:06:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 19:06:43,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-10-26 19:06:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:06:43,834 INFO L225 Difference]: With dead ends: 98 [2020-10-26 19:06:43,834 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 19:06:43,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=183, Invalid=1299, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 19:06:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 19:06:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-26 19:06:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 19:06:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-26 19:06:43,850 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 53 [2020-10-26 19:06:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:06:43,851 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-26 19:06:43,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 19:06:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-26 19:06:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 19:06:43,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:43,853 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 19:06:43,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:06:43,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1961610833, now seen corresponding path program 3 times [2020-10-26 19:06:43,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:43,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499399062] [2020-10-26 19:06:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-26 19:06:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:06:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 19:06:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:06:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:06:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 19:06:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:06:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:06:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:49,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:06:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:06:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:06:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:06:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:06:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:06:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-26 19:06:49,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499399062] [2020-10-26 19:06:49,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:06:49,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:06:49,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11288577] [2020-10-26 19:06:49,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:06:49,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:06:49,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:06:49,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:06:49,020 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 10 states. [2020-10-26 19:06:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:06:49,510 INFO L93 Difference]: Finished difference Result 179 states and 205 transitions. [2020-10-26 19:06:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 19:06:49,511 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-26 19:06:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:06:49,513 INFO L225 Difference]: With dead ends: 179 [2020-10-26 19:06:49,514 INFO L226 Difference]: Without dead ends: 105 [2020-10-26 19:06:49,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:06:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-26 19:06:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 90. [2020-10-26 19:06:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-26 19:06:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2020-10-26 19:06:49,551 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 55 [2020-10-26 19:06:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:06:49,552 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2020-10-26 19:06:49,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:06:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2020-10-26 19:06:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 19:06:49,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:49,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-26 19:06:49,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:06:49,556 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1621082895, now seen corresponding path program 4 times [2020-10-26 19:06:49,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:49,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890485760] [2020-10-26 19:06:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:54,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 19:06:54,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:06:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:06:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:06:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:06:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 19:06:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:06:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:54,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:06:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:06:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:06:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:06:54,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:06:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:06:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:06:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:06:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:06:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 19:06:54,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890485760] [2020-10-26 19:06:54,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:06:54,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:06:54,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53043970] [2020-10-26 19:06:54,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:06:54,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:06:54,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:06:54,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:06:54,737 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 10 states. [2020-10-26 19:06:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:06:55,371 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-10-26 19:06:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 19:06:55,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-26 19:06:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:06:55,373 INFO L225 Difference]: With dead ends: 98 [2020-10-26 19:06:55,373 INFO L226 Difference]: Without dead ends: 68 [2020-10-26 19:06:55,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:06:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-26 19:06:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-26 19:06:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 19:06:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-26 19:06:55,384 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 57 [2020-10-26 19:06:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:06:55,385 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-26 19:06:55,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:06:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-26 19:06:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-26 19:06:55,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:06:55,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:06:55,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:06:55,387 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:06:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:06:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash 220708155, now seen corresponding path program 5 times [2020-10-26 19:06:55,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:06:55,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767228013] [2020-10-26 19:06:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:06:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:06:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:06:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 19:07:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:07:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 19:07:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-26 19:07:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 19:07:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:01,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:01,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:01,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:07:01,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-26 19:07:02,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767228013] [2020-10-26 19:07:02,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:02,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-26 19:07:02,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835496530] [2020-10-26 19:07:02,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-26 19:07:02,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:02,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-26 19:07:02,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:07:02,003 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 31 states. [2020-10-26 19:07:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:07:03,453 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-10-26 19:07:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 19:07:03,453 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 67 [2020-10-26 19:07:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:07:03,459 INFO L225 Difference]: With dead ends: 116 [2020-10-26 19:07:03,459 INFO L226 Difference]: Without dead ends: 110 [2020-10-26 19:07:03,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:07:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-26 19:07:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2020-10-26 19:07:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-26 19:07:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-26 19:07:03,494 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 67 [2020-10-26 19:07:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:07:03,497 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-26 19:07:03,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-26 19:07:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-26 19:07:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-26 19:07:03,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:07:03,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:07:03,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:07:03,500 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:07:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:07:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1660752195, now seen corresponding path program 6 times [2020-10-26 19:07:03,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:07:03,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254731516] [2020-10-26 19:07:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:07:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:08,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:08,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:07:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:08,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:08,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-26 19:07:08,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254731516] [2020-10-26 19:07:08,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:08,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:07:08,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586838468] [2020-10-26 19:07:08,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:07:08,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:08,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:07:08,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:07:08,702 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 12 states. [2020-10-26 19:07:09,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:07:09,348 INFO L93 Difference]: Finished difference Result 223 states and 249 transitions. [2020-10-26 19:07:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:07:09,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-26 19:07:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:07:09,350 INFO L225 Difference]: With dead ends: 223 [2020-10-26 19:07:09,350 INFO L226 Difference]: Without dead ends: 127 [2020-10-26 19:07:09,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:07:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-26 19:07:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 112. [2020-10-26 19:07:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-26 19:07:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-10-26 19:07:09,386 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 69 [2020-10-26 19:07:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:07:09,387 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-10-26 19:07:09,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:07:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-10-26 19:07:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 19:07:09,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:07:09,392 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:07:09,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:07:09,392 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:07:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:07:09,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1681641087, now seen corresponding path program 7 times [2020-10-26 19:07:09,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:07:09,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033492099] [2020-10-26 19:07:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:07:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:14,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:14,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 19:07:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:14,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:14,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-26 19:07:14,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033492099] [2020-10-26 19:07:14,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:14,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:07:14,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509406984] [2020-10-26 19:07:14,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:07:14,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:07:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:07:14,576 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 12 states. [2020-10-26 19:07:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:07:15,282 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-26 19:07:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:07:15,283 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-26 19:07:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:07:15,285 INFO L225 Difference]: With dead ends: 120 [2020-10-26 19:07:15,286 INFO L226 Difference]: Without dead ends: 82 [2020-10-26 19:07:15,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:07:15,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-26 19:07:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-26 19:07:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-26 19:07:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-10-26 19:07:15,298 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 71 [2020-10-26 19:07:15,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:07:15,299 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-10-26 19:07:15,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:07:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-10-26 19:07:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-26 19:07:15,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:07:15,300 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:07:15,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:07:15,301 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:07:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:07:15,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1386580663, now seen corresponding path program 8 times [2020-10-26 19:07:15,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:07:15,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729762123] [2020-10-26 19:07:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:07:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:15,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:16,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:20,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 19:07:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:25,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:07:25,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729762123] [2020-10-26 19:07:25,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:25,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-26 19:07:25,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941824371] [2020-10-26 19:07:25,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-26 19:07:25,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:25,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-26 19:07:25,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3163, Unknown=0, NotChecked=0, Total=3422 [2020-10-26 19:07:25,602 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 59 states. [2020-10-26 19:07:26,092 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 39 [2020-10-26 19:07:27,478 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-26 19:07:28,315 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-10-26 19:07:31,948 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-26 19:07:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:07:35,863 INFO L93 Difference]: Finished difference Result 190 states and 208 transitions. [2020-10-26 19:07:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-26 19:07:35,864 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 81 [2020-10-26 19:07:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:07:35,866 INFO L225 Difference]: With dead ends: 190 [2020-10-26 19:07:35,866 INFO L226 Difference]: Without dead ends: 184 [2020-10-26 19:07:35,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1907 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=642, Invalid=7190, Unknown=0, NotChecked=0, Total=7832 [2020-10-26 19:07:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-26 19:07:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 137. [2020-10-26 19:07:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-26 19:07:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2020-10-26 19:07:35,887 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 81 [2020-10-26 19:07:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:07:35,888 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2020-10-26 19:07:35,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-26 19:07:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2020-10-26 19:07:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-26 19:07:35,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:07:35,890 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:07:35,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:07:35,890 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:07:35,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:07:35,891 INFO L82 PathProgramCache]: Analyzing trace with hash 284259339, now seen corresponding path program 9 times [2020-10-26 19:07:35,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:07:35,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195764624] [2020-10-26 19:07:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:07:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 19:07:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:07:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:07:40,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:07:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 19:07:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:41,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:41,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:41,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:41,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:07:41,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:41,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 19:07:41,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195764624] [2020-10-26 19:07:41,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:41,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:07:41,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550448204] [2020-10-26 19:07:41,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:07:41,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:41,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:07:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:07:41,153 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand 14 states. [2020-10-26 19:07:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:07:42,123 INFO L93 Difference]: Finished difference Result 312 states and 343 transitions. [2020-10-26 19:07:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:07:42,124 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-26 19:07:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:07:42,126 INFO L225 Difference]: With dead ends: 312 [2020-10-26 19:07:42,126 INFO L226 Difference]: Without dead ends: 159 [2020-10-26 19:07:42,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:07:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-26 19:07:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2020-10-26 19:07:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-26 19:07:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2020-10-26 19:07:42,148 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 83 [2020-10-26 19:07:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:07:42,149 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2020-10-26 19:07:42,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:07:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2020-10-26 19:07:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-26 19:07:42,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:07:42,152 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:07:42,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:07:42,153 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:07:42,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:07:42,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2006527349, now seen corresponding path program 10 times [2020-10-26 19:07:42,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:07:42,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232078147] [2020-10-26 19:07:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:07:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:42,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 19:07:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:47,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:07:47,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 19:07:47,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232078147] [2020-10-26 19:07:47,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:47,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:07:47,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019074552] [2020-10-26 19:07:47,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:07:47,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:47,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:07:47,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:07:47,387 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand 14 states. [2020-10-26 19:07:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:07:48,262 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2020-10-26 19:07:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:07:48,263 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-26 19:07:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:07:48,264 INFO L225 Difference]: With dead ends: 152 [2020-10-26 19:07:48,264 INFO L226 Difference]: Without dead ends: 96 [2020-10-26 19:07:48,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:07:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-26 19:07:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-26 19:07:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 19:07:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2020-10-26 19:07:48,277 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 83 [2020-10-26 19:07:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:07:48,277 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2020-10-26 19:07:48,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:07:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2020-10-26 19:07:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 19:07:48,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:07:48,279 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:07:48,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:07:48,279 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:07:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:07:48,280 INFO L82 PathProgramCache]: Analyzing trace with hash -131695401, now seen corresponding path program 11 times [2020-10-26 19:07:48,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:07:48,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140214541] [2020-10-26 19:07:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:07:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:53,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 19:07:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:07:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:07:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:07:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:07:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 19:07:57,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140214541] [2020-10-26 19:07:57,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:07:57,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-26 19:07:57,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073883834] [2020-10-26 19:07:57,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-26 19:07:57,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:07:57,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-26 19:07:57,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2324, Unknown=0, NotChecked=0, Total=2450 [2020-10-26 19:07:57,615 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 50 states. [2020-10-26 19:07:57,906 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-26 19:07:59,722 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-26 19:08:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:08:03,837 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2020-10-26 19:08:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 19:08:03,838 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 95 [2020-10-26 19:08:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:08:03,840 INFO L225 Difference]: With dead ends: 164 [2020-10-26 19:08:03,840 INFO L226 Difference]: Without dead ends: 158 [2020-10-26 19:08:03,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 5 SyntacticMatches, 16 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=284, Invalid=4972, Unknown=0, NotChecked=0, Total=5256 [2020-10-26 19:08:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-26 19:08:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 149. [2020-10-26 19:08:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-26 19:08:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2020-10-26 19:08:03,858 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 95 [2020-10-26 19:08:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:08:03,859 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2020-10-26 19:08:03,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-26 19:08:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2020-10-26 19:08:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 19:08:03,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:08:03,860 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:08:03,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:08:03,861 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:08:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:08:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash 314898265, now seen corresponding path program 12 times [2020-10-26 19:08:03,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:08:03,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020228208] [2020-10-26 19:08:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:08:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:08:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:08:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-26 19:08:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:09,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:08:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:09,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:09,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:08:09,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:08:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:08:09,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:08:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:08:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:08:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 19:08:09,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020228208] [2020-10-26 19:08:09,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:08:09,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:08:09,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784094136] [2020-10-26 19:08:09,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:08:09,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:08:09,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:08:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:08:09,170 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 16 states. [2020-10-26 19:08:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:08:10,380 INFO L93 Difference]: Finished difference Result 311 states and 337 transitions. [2020-10-26 19:08:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 19:08:10,381 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-26 19:08:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:08:10,383 INFO L225 Difference]: With dead ends: 311 [2020-10-26 19:08:10,383 INFO L226 Difference]: Without dead ends: 171 [2020-10-26 19:08:10,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-26 19:08:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-26 19:08:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-26 19:08:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-26 19:08:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-10-26 19:08:10,401 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 97 [2020-10-26 19:08:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:08:10,401 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-10-26 19:08:10,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:08:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-10-26 19:08:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-26 19:08:10,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:08:10,407 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:08:10,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:08:10,408 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:08:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:08:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash 733863963, now seen corresponding path program 13 times [2020-10-26 19:08:10,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:08:10,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373221545] [2020-10-26 19:08:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:08:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:10,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:15,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 19:08:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:08:15,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:08:15,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:15,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:08:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:08:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 19:08:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:15,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:08:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:08:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:08:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:08:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:08:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:08:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:08:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-10-26 19:08:15,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373221545] [2020-10-26 19:08:15,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:08:15,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:08:15,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122727063] [2020-10-26 19:08:15,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:08:15,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:08:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:08:15,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:08:15,713 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 16 states. [2020-10-26 19:08:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:08:17,039 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-26 19:08:17,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:08:17,040 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-10-26 19:08:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:08:17,042 INFO L225 Difference]: With dead ends: 164 [2020-10-26 19:08:17,042 INFO L226 Difference]: Without dead ends: 110 [2020-10-26 19:08:17,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:08:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-26 19:08:17,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-26 19:08:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-26 19:08:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2020-10-26 19:08:17,057 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 99 [2020-10-26 19:08:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:08:17,057 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2020-10-26 19:08:17,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:08:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2020-10-26 19:08:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-26 19:08:17,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:08:17,058 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:08:17,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:08:17,058 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:08:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:08:17,059 INFO L82 PathProgramCache]: Analyzing trace with hash -667241499, now seen corresponding path program 14 times [2020-10-26 19:08:17,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:08:17,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297930373] [2020-10-26 19:08:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:08:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:22,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:22,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 19:08:22,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:08:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 19:08:22,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-26 19:08:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:08:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 19:08:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:08:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:08:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-26 19:08:27,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297930373] [2020-10-26 19:08:27,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:08:27,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-26 19:08:27,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722652732] [2020-10-26 19:08:27,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-26 19:08:27,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:08:27,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-26 19:08:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1959, Unknown=0, NotChecked=0, Total=2070 [2020-10-26 19:08:27,641 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand 46 states. [2020-10-26 19:08:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:08:33,063 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2020-10-26 19:08:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 19:08:33,065 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 109 [2020-10-26 19:08:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:08:33,067 INFO L225 Difference]: With dead ends: 188 [2020-10-26 19:08:33,067 INFO L226 Difference]: Without dead ends: 182 [2020-10-26 19:08:33,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 7 SyntacticMatches, 28 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=121, Invalid=2135, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 19:08:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-26 19:08:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2020-10-26 19:08:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-26 19:08:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2020-10-26 19:08:33,087 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 109 [2020-10-26 19:08:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:08:33,088 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2020-10-26 19:08:33,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-26 19:08:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2020-10-26 19:08:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 19:08:33,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:08:33,089 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:08:33,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:08:33,089 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:08:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:08:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1626471705, now seen corresponding path program 15 times [2020-10-26 19:08:33,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:08:33,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024191288] [2020-10-26 19:08:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:08:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:38,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 19:08:38,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:08:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:08:38,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:08:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:08:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-26 19:08:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:08:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:38,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:08:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:08:38,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024191288] [2020-10-26 19:08:38,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:08:38,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:08:38,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655751371] [2020-10-26 19:08:38,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:08:38,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:08:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:08:38,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:08:38,478 INFO L87 Difference]: Start difference. First operand 171 states and 182 transitions. Second operand 18 states. [2020-10-26 19:08:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:08:39,853 INFO L93 Difference]: Finished difference Result 355 states and 381 transitions. [2020-10-26 19:08:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:08:39,854 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 111 [2020-10-26 19:08:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:08:39,856 INFO L225 Difference]: With dead ends: 355 [2020-10-26 19:08:39,857 INFO L226 Difference]: Without dead ends: 193 [2020-10-26 19:08:39,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:08:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-26 19:08:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2020-10-26 19:08:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-26 19:08:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2020-10-26 19:08:39,874 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 111 [2020-10-26 19:08:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:08:39,874 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2020-10-26 19:08:39,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:08:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2020-10-26 19:08:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-26 19:08:39,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:08:39,876 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:08:39,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:08:39,876 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:08:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:08:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1013588009, now seen corresponding path program 16 times [2020-10-26 19:08:39,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:08:39,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129372057] [2020-10-26 19:08:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:08:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:42,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 19:08:44,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:08:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 19:08:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:08:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:08:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-26 19:08:45,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129372057] [2020-10-26 19:08:45,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:08:45,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:08:45,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359160538] [2020-10-26 19:08:45,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:08:45,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:08:45,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:08:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:08:45,254 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 18 states. [2020-10-26 19:08:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:08:46,930 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2020-10-26 19:08:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 19:08:46,931 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-26 19:08:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:08:46,933 INFO L225 Difference]: With dead ends: 186 [2020-10-26 19:08:46,933 INFO L226 Difference]: Without dead ends: 124 [2020-10-26 19:08:46,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:08:46,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-26 19:08:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-26 19:08:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-26 19:08:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2020-10-26 19:08:46,948 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 113 [2020-10-26 19:08:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:08:46,949 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2020-10-26 19:08:46,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:08:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2020-10-26 19:08:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 19:08:46,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:08:46,950 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:08:46,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:08:46,951 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:08:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:08:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash -658638221, now seen corresponding path program 17 times [2020-10-26 19:08:46,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:08:46,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916289843] [2020-10-26 19:08:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:08:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:08:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:08:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6318 [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 97 [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:08:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 19:08:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:08:55,544 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-26 19:08:55,735 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-10-26 19:08:55,927 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-26 19:08:56,333 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-26 19:08:56,572 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-26 19:08:56,803 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-26 19:08:57,085 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-26 19:08:57,307 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-26 19:08:57,543 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-26 19:08:57,776 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-26 19:08:58,006 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-10-26 19:08:58,257 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-26 19:08:59,286 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-10-26 19:08:59,518 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-26 19:08:59,762 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-26 19:08:59,998 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-10-26 19:09:00,256 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-26 19:09:00,522 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-26 19:09:00,795 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-26 19:09:01,215 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-26 19:09:01,591 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-26 19:09:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:09:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:09:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:09:10,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:09:10,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:09:10,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:09:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:09:10,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:09:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:09:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:09:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:09:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:09:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 36 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:09:10,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916289843] [2020-10-26 19:09:10,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:09:10,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-10-26 19:09:10,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621617711] [2020-10-26 19:09:10,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-10-26 19:09:10,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:09:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-10-26 19:09:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=8341, Unknown=0, NotChecked=0, Total=8742 [2020-10-26 19:09:10,936 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand 94 states. [2020-10-26 19:09:13,663 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-26 19:09:14,819 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-26 19:09:16,657 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-26 19:09:17,682 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-26 19:09:18,681 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-26 19:09:19,408 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-10-26 19:09:20,006 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2020-10-26 19:09:20,816 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 49 [2020-10-26 19:09:22,196 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 87 [2020-10-26 19:09:22,671 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-26 19:09:23,554 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 79 [2020-10-26 19:09:24,921 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 51 [2020-10-26 19:09:25,830 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 47 [2020-10-26 19:09:26,540 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 65 [2020-10-26 19:09:27,364 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 39 [2020-10-26 19:09:28,213 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-26 19:09:28,929 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 38 [2020-10-26 19:09:29,324 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-26 19:09:30,046 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 36 [2020-10-26 19:09:31,051 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-26 19:09:31,781 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 32 [2020-10-26 19:09:32,551 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 35 [2020-10-26 19:09:33,699 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 45 [2020-10-26 19:09:34,530 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 40 [2020-10-26 19:09:35,674 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 41 [2020-10-26 19:09:36,546 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 39 [2020-10-26 19:09:37,838 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 62 [2020-10-26 19:09:38,794 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2020-10-26 19:09:39,907 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2020-10-26 19:09:40,851 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 68 [2020-10-26 19:09:42,072 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 62 [2020-10-26 19:09:43,170 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 21 [2020-10-26 19:09:44,108 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 17 [2020-10-26 19:09:44,863 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 22 [2020-10-26 19:09:45,743 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 41 [2020-10-26 19:09:46,518 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 38 [2020-10-26 19:09:47,314 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 42 [2020-10-26 19:09:48,062 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 48 [2020-10-26 19:09:48,851 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 28 [2020-10-26 19:09:49,637 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 31 [2020-10-26 19:09:50,550 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 44 [2020-10-26 19:09:51,399 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 44 [2020-10-26 19:09:52,388 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 41