/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:52,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:52,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:53,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:53,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:53,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:53,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:53,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:53,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:53,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:53,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:53,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:53,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:53,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:53,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:53,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:53,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:53,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:53,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:53,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:53,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:53,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:53,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:53,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:53,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:53,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:53,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:53,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:53,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:53,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:53,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:53,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:53,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:53,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:53,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:53,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:53,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:53,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:53,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:53,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:53,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:53,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:17:53,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:53,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:53,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:53,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:53,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:53,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:53,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:53,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:53,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:53,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:53,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:53,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:53,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:53,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:53,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:53,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:53,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:53,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:53,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:53,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:53,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:53,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:53,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:53,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:53,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:53,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:53,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:53,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:53,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:53,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:17:53,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:53,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:53,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:53,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:53,628 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:53,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-24 19:17:53,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/614e1bc0c/d245d7dd6ff040548326ba7a38eaf2e3/FLAG925661cc2 [2020-09-24 19:17:54,261 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:54,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-24 19:17:54,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/614e1bc0c/d245d7dd6ff040548326ba7a38eaf2e3/FLAG925661cc2 [2020-09-24 19:17:54,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/614e1bc0c/d245d7dd6ff040548326ba7a38eaf2e3 [2020-09-24 19:17:54,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:54,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:54,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:54,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:54,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:54,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:54" (1/1) ... [2020-09-24 19:17:54,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:54, skipping insertion in model container [2020-09-24 19:17:54,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:54" (1/1) ... [2020-09-24 19:17:54,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:54,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:55,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:55,056 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:55,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:55,214 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:55,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55 WrapperNode [2020-09-24 19:17:55,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:55,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:55,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:55,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:55,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... [2020-09-24 19:17:55,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:55,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:55,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:55,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:55,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:55,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:17:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-24 19:17:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-24 19:17:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-24 19:17:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 19:17:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 19:17:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:17:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-24 19:17:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-24 19:17:55,365 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-24 19:17:55,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:55,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:55,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:55,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:55,953 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:17:55,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:55 BoogieIcfgContainer [2020-09-24 19:17:55,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:55,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:55,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:55,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:55,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:54" (1/3) ... [2020-09-24 19:17:55,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11266e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:55, skipping insertion in model container [2020-09-24 19:17:55,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:55" (2/3) ... [2020-09-24 19:17:55,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11266e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:55, skipping insertion in model container [2020-09-24 19:17:55,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:55" (3/3) ... [2020-09-24 19:17:55,970 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-24 19:17:55,982 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:55,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:56,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:56,053 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:56,053 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:56,053 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:56,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:56,054 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:56,054 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:56,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:56,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-24 19:17:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 19:17:56,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:56,101 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:56,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-24 19:17:56,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:56,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432691488] [2020-09-24 19:17:56,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 19:17:57,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:17:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:17:57,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:17:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 19:17:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:17:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:17:57,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:17:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:57,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:17:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:57,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:17:57,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:57,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:17:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:57,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:17:57,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 19:17:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:57,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:57,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:57,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 19:17:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:57,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:57,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:57,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 19:17:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:57,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:17:57,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:17:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:17:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:17:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-09-24 19:17:57,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432691488] [2020-09-24 19:17:57,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:57,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:17:57,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617564508] [2020-09-24 19:17:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:17:57,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:57,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:17:57,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:17:57,487 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-09-24 19:17:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:57,556 INFO L93 Difference]: Finished difference Result 253 states and 309 transitions. [2020-09-24 19:17:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:17:57,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-09-24 19:17:57,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:57,574 INFO L225 Difference]: With dead ends: 253 [2020-09-24 19:17:57,575 INFO L226 Difference]: Without dead ends: 126 [2020-09-24 19:17:57,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:17:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-24 19:17:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-09-24 19:17:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-24 19:17:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-09-24 19:17:57,648 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 100 [2020-09-24 19:17:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:57,651 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-09-24 19:17:57,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:17:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-09-24 19:17:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 19:17:57,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:57,658 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:57,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:57,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:57,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2043535721, now seen corresponding path program 1 times [2020-09-24 19:17:57,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:57,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563114436] [2020-09-24 19:17:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 19:17:58,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:17:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:17:58,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:17:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:17:58,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:17:58,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:58,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:58,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:17:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:58,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:17:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:58,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:17:58,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:17:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:17:58,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:58,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 19:17:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:58,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:58,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:17:58,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:17:58,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:58,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:58,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 19:17:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:58,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:17:58,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:17:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:17:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:58,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:58,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:17:58,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:58,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:17:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:58,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 19:17:58,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563114436] [2020-09-24 19:17:58,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:17:58,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 19:17:58,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449108991] [2020-09-24 19:17:58,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:58,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:58,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:58,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:58,828 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 4 states. [2020-09-24 19:17:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:59,011 INFO L93 Difference]: Finished difference Result 278 states and 328 transitions. [2020-09-24 19:17:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:17:59,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-09-24 19:17:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:59,021 INFO L225 Difference]: With dead ends: 278 [2020-09-24 19:17:59,021 INFO L226 Difference]: Without dead ends: 180 [2020-09-24 19:17:59,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-24 19:17:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 160. [2020-09-24 19:17:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-24 19:17:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 188 transitions. [2020-09-24 19:17:59,066 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 188 transitions. Word has length 102 [2020-09-24 19:17:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:59,067 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 188 transitions. [2020-09-24 19:17:59,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 188 transitions. [2020-09-24 19:17:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 19:17:59,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:59,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:59,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:59,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1140538976, now seen corresponding path program 1 times [2020-09-24 19:17:59,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:59,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870143958] [2020-09-24 19:17:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 19:18:00,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:00,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:18:00,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:00,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:00,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:00,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:00,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:00,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:18:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:18:00,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:18:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:18:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:00,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:00,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:00,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 19:18:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:00,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:18:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:00,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:00,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:18:00,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:00,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:18:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 19:18:00,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870143958] [2020-09-24 19:18:00,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:00,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 19:18:00,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615787596] [2020-09-24 19:18:00,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:18:00,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:18:00,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:18:00,255 INFO L87 Difference]: Start difference. First operand 160 states and 188 transitions. Second operand 4 states. [2020-09-24 19:18:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:00,350 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2020-09-24 19:18:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:18:00,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-09-24 19:18:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:00,354 INFO L225 Difference]: With dead ends: 293 [2020-09-24 19:18:00,354 INFO L226 Difference]: Without dead ends: 184 [2020-09-24 19:18:00,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-09-24 19:18:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 168. [2020-09-24 19:18:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-24 19:18:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2020-09-24 19:18:00,372 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 105 [2020-09-24 19:18:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:00,373 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2020-09-24 19:18:00,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:18:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2020-09-24 19:18:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 19:18:00,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:00,375 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:00,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:18:00,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:00,376 INFO L82 PathProgramCache]: Analyzing trace with hash -261920365, now seen corresponding path program 1 times [2020-09-24 19:18:00,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:00,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211631446] [2020-09-24 19:18:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 19:18:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:18:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:01,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:01,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:01,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:01,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 19:18:01,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:18:01,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:18:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-24 19:18:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:01,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:01,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 19:18:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:01,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:01,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 19:18:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:01,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:01,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:01,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:18:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:18:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 19:18:01,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211631446] [2020-09-24 19:18:01,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:01,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 19:18:01,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869377391] [2020-09-24 19:18:01,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:18:01,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:01,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:18:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:18:01,537 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand 4 states. [2020-09-24 19:18:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:01,651 INFO L93 Difference]: Finished difference Result 307 states and 364 transitions. [2020-09-24 19:18:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:01,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-24 19:18:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:01,654 INFO L225 Difference]: With dead ends: 307 [2020-09-24 19:18:01,655 INFO L226 Difference]: Without dead ends: 175 [2020-09-24 19:18:01,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-24 19:18:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2020-09-24 19:18:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 19:18:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 182 transitions. [2020-09-24 19:18:01,670 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 182 transitions. Word has length 107 [2020-09-24 19:18:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:01,670 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 182 transitions. [2020-09-24 19:18:01,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:18:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 182 transitions. [2020-09-24 19:18:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 19:18:01,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:01,672 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:01,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:18:01,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:01,673 INFO L82 PathProgramCache]: Analyzing trace with hash -161175400, now seen corresponding path program 1 times [2020-09-24 19:18:01,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:01,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840961873] [2020-09-24 19:18:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 19:18:02,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:18:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:18:02,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:18:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:18:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:02,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:02,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:02,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:18:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:18:02,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:18:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:02,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:02,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:02,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:18:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:02,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:18:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:02,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:18:02,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:18:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-24 19:18:02,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840961873] [2020-09-24 19:18:02,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:02,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:18:02,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471735149] [2020-09-24 19:18:02,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:02,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:02,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:02,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:02,893 INFO L87 Difference]: Start difference. First operand 158 states and 182 transitions. Second operand 5 states. [2020-09-24 19:18:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:02,968 INFO L93 Difference]: Finished difference Result 218 states and 254 transitions. [2020-09-24 19:18:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:02,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-09-24 19:18:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:02,971 INFO L225 Difference]: With dead ends: 218 [2020-09-24 19:18:02,971 INFO L226 Difference]: Without dead ends: 204 [2020-09-24 19:18:02,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-24 19:18:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2020-09-24 19:18:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-24 19:18:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2020-09-24 19:18:02,986 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 110 [2020-09-24 19:18:02,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:02,987 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2020-09-24 19:18:02,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2020-09-24 19:18:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 19:18:02,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:02,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:02,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:18:02,989 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:02,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1153920056, now seen corresponding path program 1 times [2020-09-24 19:18:02,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:02,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733734357] [2020-09-24 19:18:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:03,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 19:18:04,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:18:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:18:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:18:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:18:04,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:18:04,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:18:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:18:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:04,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:04,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:04,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:04,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:18:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:04,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:04,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:04,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:04,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:18:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:18:04,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:18:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 19:18:04,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733734357] [2020-09-24 19:18:04,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:04,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:18:04,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525745767] [2020-09-24 19:18:04,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:04,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:04,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:04,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:04,137 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand 5 states. [2020-09-24 19:18:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:04,239 INFO L93 Difference]: Finished difference Result 320 states and 377 transitions. [2020-09-24 19:18:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:18:04,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-09-24 19:18:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:04,241 INFO L225 Difference]: With dead ends: 320 [2020-09-24 19:18:04,242 INFO L226 Difference]: Without dead ends: 196 [2020-09-24 19:18:04,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-24 19:18:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 175. [2020-09-24 19:18:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 19:18:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2020-09-24 19:18:04,255 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 110 [2020-09-24 19:18:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:04,256 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2020-09-24 19:18:04,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2020-09-24 19:18:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 19:18:04,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:04,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:04,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:18:04,259 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash -856467222, now seen corresponding path program 1 times [2020-09-24 19:18:04,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:04,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552362532] [2020-09-24 19:18:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-24 19:18:05,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:18:05,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:18:05,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:18:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:05,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:05,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:05,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:05,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:05,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:05,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:05,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:05,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 19:18:05,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:05,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:18:05,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:18:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:05,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:18:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:05,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:05,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:05,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:05,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:18:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:05,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:18:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:05,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:05,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:18:05,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:18:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 19:18:05,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552362532] [2020-09-24 19:18:05,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:05,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:18:05,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68485874] [2020-09-24 19:18:05,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:18:05,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:05,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:18:05,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:05,445 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand 5 states. [2020-09-24 19:18:05,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:05,612 INFO L93 Difference]: Finished difference Result 336 states and 397 transitions. [2020-09-24 19:18:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:18:05,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-09-24 19:18:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:05,615 INFO L225 Difference]: With dead ends: 336 [2020-09-24 19:18:05,615 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 19:18:05,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 19:18:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 175. [2020-09-24 19:18:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 19:18:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2020-09-24 19:18:05,635 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 110 [2020-09-24 19:18:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:05,635 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2020-09-24 19:18:05,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:18:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2020-09-24 19:18:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-24 19:18:05,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:05,637 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:05,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:18:05,638 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:05,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:05,638 INFO L82 PathProgramCache]: Analyzing trace with hash -812048320, now seen corresponding path program 2 times [2020-09-24 19:18:05,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:05,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140320315] [2020-09-24 19:18:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 19:18:06,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:18:06,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:18:06,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 19:18:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:18:06,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:06,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:06,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:06,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:06,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:06,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:06,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:18:06,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:18:06,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 19:18:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:06,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:06,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:06,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:06,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:18:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:06,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:06,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:18:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:06,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:06,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:18:06,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:06,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:06,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:18:06,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 19:18:06,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140320315] [2020-09-24 19:18:06,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:06,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:18:06,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111383793] [2020-09-24 19:18:06,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:06,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:06,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:06,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:06,909 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 6 states. [2020-09-24 19:18:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:07,024 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2020-09-24 19:18:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:18:07,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-09-24 19:18:07,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:07,028 INFO L225 Difference]: With dead ends: 219 [2020-09-24 19:18:07,028 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 19:18:07,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 19:18:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 179. [2020-09-24 19:18:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-24 19:18:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2020-09-24 19:18:07,040 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 115 [2020-09-24 19:18:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:07,040 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2020-09-24 19:18:07,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2020-09-24 19:18:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-24 19:18:07,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:07,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:07,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:18:07,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:07,044 INFO L82 PathProgramCache]: Analyzing trace with hash -515723641, now seen corresponding path program 1 times [2020-09-24 19:18:07,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:07,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874462661] [2020-09-24 19:18:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 19:18:07,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-24 19:18:07,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:18:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:07,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:07,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:07,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:07,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:07,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:07,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:18:07,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:18:07,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:18:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 19:18:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:07,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:07,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:07,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:07,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:18:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:07,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:18:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:18:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:07,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 19:18:07,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874462661] [2020-09-24 19:18:07,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:07,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:18:07,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551310942] [2020-09-24 19:18:07,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:07,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:07,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:07,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:07,901 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand 6 states. [2020-09-24 19:18:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:08,038 INFO L93 Difference]: Finished difference Result 353 states and 416 transitions. [2020-09-24 19:18:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:18:08,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-24 19:18:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:08,041 INFO L225 Difference]: With dead ends: 353 [2020-09-24 19:18:08,041 INFO L226 Difference]: Without dead ends: 220 [2020-09-24 19:18:08,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:18:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-24 19:18:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 189. [2020-09-24 19:18:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-24 19:18:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 220 transitions. [2020-09-24 19:18:08,062 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 220 transitions. Word has length 117 [2020-09-24 19:18:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:08,062 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 220 transitions. [2020-09-24 19:18:08,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 220 transitions. [2020-09-24 19:18:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-24 19:18:08,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:08,065 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:08,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:18:08,065 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:08,065 INFO L82 PathProgramCache]: Analyzing trace with hash 237385401, now seen corresponding path program 1 times [2020-09-24 19:18:08,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:08,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045758277] [2020-09-24 19:18:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 19:18:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-09-24 19:18:08,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 19:18:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:08,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:18:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:18:08,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:18:08,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:18:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 19:18:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:08,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:18:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:08,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:18:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:18:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:08,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:08,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:08,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:08,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:18:08,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:08,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:18:08,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 19:18:08,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045758277] [2020-09-24 19:18:08,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:08,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:18:08,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590167037] [2020-09-24 19:18:08,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:08,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:08,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:08,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:08,980 INFO L87 Difference]: Start difference. First operand 189 states and 220 transitions. Second operand 6 states. [2020-09-24 19:18:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:09,103 INFO L93 Difference]: Finished difference Result 349 states and 413 transitions. [2020-09-24 19:18:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:18:09,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-24 19:18:09,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:09,106 INFO L225 Difference]: With dead ends: 349 [2020-09-24 19:18:09,106 INFO L226 Difference]: Without dead ends: 218 [2020-09-24 19:18:09,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-24 19:18:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 189. [2020-09-24 19:18:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-24 19:18:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 220 transitions. [2020-09-24 19:18:09,118 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 220 transitions. Word has length 117 [2020-09-24 19:18:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:09,118 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 220 transitions. [2020-09-24 19:18:09,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 220 transitions. [2020-09-24 19:18:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 19:18:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:09,120 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:09,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:18:09,121 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1273487743, now seen corresponding path program 2 times [2020-09-24 19:18:09,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:09,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688954033] [2020-09-24 19:18:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:09,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:09,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 19:18:09,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-09-24 19:18:09,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 19:18:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:18:09,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:09,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:09,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:09,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:09,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:09,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:09,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:09,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:10,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:18:10,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:18:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:10,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:18:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:10,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:10,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:10,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 19:18:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:10,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:10,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:10,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 19:18:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:10,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:18:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:10,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:18:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-24 19:18:10,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688954033] [2020-09-24 19:18:10,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:10,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:18:10,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967570098] [2020-09-24 19:18:10,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:10,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:10,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:10,109 INFO L87 Difference]: Start difference. First operand 189 states and 220 transitions. Second operand 6 states. [2020-09-24 19:18:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:10,192 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2020-09-24 19:18:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:18:10,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-09-24 19:18:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:10,195 INFO L225 Difference]: With dead ends: 208 [2020-09-24 19:18:10,195 INFO L226 Difference]: Without dead ends: 201 [2020-09-24 19:18:10,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:18:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-24 19:18:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2020-09-24 19:18:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-09-24 19:18:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 230 transitions. [2020-09-24 19:18:10,207 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 230 transitions. Word has length 122 [2020-09-24 19:18:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:10,208 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 230 transitions. [2020-09-24 19:18:10,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 230 transitions. [2020-09-24 19:18:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 19:18:10,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:10,210 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:10,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:18:10,210 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash -273081057, now seen corresponding path program 1 times [2020-09-24 19:18:10,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:10,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168024740] [2020-09-24 19:18:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:10,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:10,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 19:18:10,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-24 19:18:10,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-24 19:18:10,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:18:10,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:11,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:11,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:11,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:11,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:18:11,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:18:11,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:11,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:11,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:11,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:18:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:11,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:11,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:11,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 19:18:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:11,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:11,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 19:18:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:11,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:18:11,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:11,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:11,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:11,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-24 19:18:11,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168024740] [2020-09-24 19:18:11,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:11,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:18:11,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164223799] [2020-09-24 19:18:11,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:11,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:11,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:11,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:11,186 INFO L87 Difference]: Start difference. First operand 197 states and 230 transitions. Second operand 6 states. [2020-09-24 19:18:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:11,243 INFO L93 Difference]: Finished difference Result 203 states and 235 transitions. [2020-09-24 19:18:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:18:11,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-09-24 19:18:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:11,245 INFO L225 Difference]: With dead ends: 203 [2020-09-24 19:18:11,245 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 19:18:11,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:18:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 19:18:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-09-24 19:18:11,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-24 19:18:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 213 transitions. [2020-09-24 19:18:11,258 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 213 transitions. Word has length 122 [2020-09-24 19:18:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:11,258 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 213 transitions. [2020-09-24 19:18:11,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 213 transitions. [2020-09-24 19:18:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 19:18:11,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:11,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:11,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:18:11,261 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash -473737659, now seen corresponding path program 1 times [2020-09-24 19:18:11,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:11,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179033176] [2020-09-24 19:18:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:18:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:18:12,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:18:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-24 19:18:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:18:12,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:12,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:12,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:12,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:12,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:12,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:12,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:12,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:18:12,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 19:18:12,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:12,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:18:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:12,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:12,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:12,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 19:18:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:12,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:18:12,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 19:18:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:12,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:12,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:12,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:18:12,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:12,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-24 19:18:12,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179033176] [2020-09-24 19:18:12,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:12,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:18:12,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042139348] [2020-09-24 19:18:12,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:18:12,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:18:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:18:12,532 INFO L87 Difference]: Start difference. First operand 185 states and 213 transitions. Second operand 6 states. [2020-09-24 19:18:12,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:12,602 INFO L93 Difference]: Finished difference Result 283 states and 325 transitions. [2020-09-24 19:18:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:18:12,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-09-24 19:18:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:12,605 INFO L225 Difference]: With dead ends: 283 [2020-09-24 19:18:12,606 INFO L226 Difference]: Without dead ends: 214 [2020-09-24 19:18:12,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:18:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-24 19:18:12,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2020-09-24 19:18:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 19:18:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 226 transitions. [2020-09-24 19:18:12,623 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 226 transitions. Word has length 123 [2020-09-24 19:18:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:12,623 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 226 transitions. [2020-09-24 19:18:12,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:18:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 226 transitions. [2020-09-24 19:18:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 19:18:12,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:12,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:12,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 19:18:12,626 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:12,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1156682075, now seen corresponding path program 1 times [2020-09-24 19:18:12,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:12,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621161740] [2020-09-24 19:18:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:18:13,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:18:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:18:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:13,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:18:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:13,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:13,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:13,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:13,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:13,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:13,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:18:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:18:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:18:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:18:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:18:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:13,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:13,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 19:18:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:13,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:13,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 19:18:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:13,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:13,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:18:13,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 19:18:13,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621161740] [2020-09-24 19:18:13,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:13,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:18:13,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141798033] [2020-09-24 19:18:13,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:18:13,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:13,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:18:13,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:13,877 INFO L87 Difference]: Start difference. First operand 195 states and 226 transitions. Second operand 7 states. [2020-09-24 19:18:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:14,028 INFO L93 Difference]: Finished difference Result 393 states and 462 transitions. [2020-09-24 19:18:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:18:14,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-24 19:18:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:14,031 INFO L225 Difference]: With dead ends: 393 [2020-09-24 19:18:14,032 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 19:18:14,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:18:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 19:18:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 205. [2020-09-24 19:18:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 19:18:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2020-09-24 19:18:14,045 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 123 [2020-09-24 19:18:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:14,045 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2020-09-24 19:18:14,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:18:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2020-09-24 19:18:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 19:18:14,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:14,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:14,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 19:18:14,047 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:14,048 INFO L82 PathProgramCache]: Analyzing trace with hash 714861747, now seen corresponding path program 1 times [2020-09-24 19:18:14,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:14,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953785710] [2020-09-24 19:18:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:14,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:18:15,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:18:15,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:18:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:18:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:15,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:15,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:15,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:15,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:15,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:18:15,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:15,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:18:15,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:18:15,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:18:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-24 19:18:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:15,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:15,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-24 19:18:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:15,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:15,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:15,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:15,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 19:18:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:15,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:15,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:18:15,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:15,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:15,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 19:18:15,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953785710] [2020-09-24 19:18:15,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:15,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:18:15,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544915067] [2020-09-24 19:18:15,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:18:15,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:18:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:18:15,311 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand 7 states. [2020-09-24 19:18:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:15,603 INFO L93 Difference]: Finished difference Result 394 states and 465 transitions. [2020-09-24 19:18:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:18:15,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-24 19:18:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:15,605 INFO L225 Difference]: With dead ends: 394 [2020-09-24 19:18:15,605 INFO L226 Difference]: Without dead ends: 242 [2020-09-24 19:18:15,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:18:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-24 19:18:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 205. [2020-09-24 19:18:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 19:18:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 237 transitions. [2020-09-24 19:18:15,618 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 237 transitions. Word has length 123 [2020-09-24 19:18:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:15,618 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 237 transitions. [2020-09-24 19:18:15,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:18:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 237 transitions. [2020-09-24 19:18:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 19:18:15,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:15,620 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:15,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 19:18:15,621 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash 210732957, now seen corresponding path program 2 times [2020-09-24 19:18:15,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:15,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969163662] [2020-09-24 19:18:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:18:16,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:18:16,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:18:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:16,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:16,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:16,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:16,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:16,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:18:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 19:18:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:18:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:18:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:18:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:16,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:18:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:16,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:16,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:16,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:18:16,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:16,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:16,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 19:18:16,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969163662] [2020-09-24 19:18:16,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:16,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:18:16,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218083975] [2020-09-24 19:18:16,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:18:16,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:18:16,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:18:16,893 INFO L87 Difference]: Start difference. First operand 205 states and 237 transitions. Second operand 8 states. [2020-09-24 19:18:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:17,080 INFO L93 Difference]: Finished difference Result 412 states and 486 transitions. [2020-09-24 19:18:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:18:17,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-09-24 19:18:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:17,084 INFO L225 Difference]: With dead ends: 412 [2020-09-24 19:18:17,084 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 19:18:17,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:18:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 19:18:17,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 215. [2020-09-24 19:18:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 19:18:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 250 transitions. [2020-09-24 19:18:17,099 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 250 transitions. Word has length 128 [2020-09-24 19:18:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:17,100 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 250 transitions. [2020-09-24 19:18:17,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:18:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 250 transitions. [2020-09-24 19:18:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 19:18:17,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:17,102 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:17,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 19:18:17,102 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2082276779, now seen corresponding path program 2 times [2020-09-24 19:18:17,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:17,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594604530] [2020-09-24 19:18:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:18:18,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:18:18,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-24 19:18:18,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:18:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:18,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:18,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:18,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:18,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:18,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:18:18,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 19:18:18,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:18,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:18,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:18:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:18:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:18:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:18:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:18:18,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:18:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-24 19:18:18,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594604530] [2020-09-24 19:18:18,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:18,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:18:18,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411276096] [2020-09-24 19:18:18,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:18:18,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:18,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:18:18,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:18:18,430 INFO L87 Difference]: Start difference. First operand 215 states and 250 transitions. Second operand 8 states. [2020-09-24 19:18:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:18,555 INFO L93 Difference]: Finished difference Result 270 states and 314 transitions. [2020-09-24 19:18:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:18:18,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-09-24 19:18:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:18,557 INFO L225 Difference]: With dead ends: 270 [2020-09-24 19:18:18,558 INFO L226 Difference]: Without dead ends: 246 [2020-09-24 19:18:18,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:18:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-24 19:18:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 211. [2020-09-24 19:18:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 19:18:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2020-09-24 19:18:18,571 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 128 [2020-09-24 19:18:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:18,572 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2020-09-24 19:18:18,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:18:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2020-09-24 19:18:18,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 19:18:18,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:18,574 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:18,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 19:18:18,575 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:18,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:18,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2070798927, now seen corresponding path program 1 times [2020-09-24 19:18:18,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:18,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509280296] [2020-09-24 19:18:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:18,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:18,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 19:18:19,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:18:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-09-24 19:18:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:18:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:19,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:19,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:19,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:19,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:18:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 19:18:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:18:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:19,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:18:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:18:19,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:18:19,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-24 19:18:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:19,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:19,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:19,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:19,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:18:19,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:18:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:18:19,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509280296] [2020-09-24 19:18:19,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:18:19,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:18:19,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470595353] [2020-09-24 19:18:19,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:18:19,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:18:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:18:19,853 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand 4 states. [2020-09-24 19:18:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:19,894 INFO L93 Difference]: Finished difference Result 230 states and 264 transitions. [2020-09-24 19:18:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:18:19,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-24 19:18:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:19,898 INFO L225 Difference]: With dead ends: 230 [2020-09-24 19:18:19,898 INFO L226 Difference]: Without dead ends: 210 [2020-09-24 19:18:19,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-24 19:18:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2020-09-24 19:18:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-24 19:18:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 241 transitions. [2020-09-24 19:18:19,918 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 241 transitions. Word has length 132 [2020-09-24 19:18:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:19,919 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 241 transitions. [2020-09-24 19:18:19,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:18:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 241 transitions. [2020-09-24 19:18:19,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-24 19:18:19,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:19,924 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:19,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 19:18:19,925 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:19,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1387854511, now seen corresponding path program 1 times [2020-09-24 19:18:19,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:19,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102795925] [2020-09-24 19:18:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:20,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 19:18:20,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:18:20,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:18:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:20,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:20,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:20,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:20,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:20,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:20,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:20,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 19:18:21,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 19:18:21,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:18:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:21,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 19:18:21,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:18:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:21,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:18:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:18:21,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:18:21,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:18:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-24 19:18:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:21,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:18:21,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 19:18:21,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102795925] [2020-09-24 19:18:21,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:21,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:18:21,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316873035] [2020-09-24 19:18:21,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:18:21,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:21,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:18:21,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:18:21,375 INFO L87 Difference]: Start difference. First operand 210 states and 241 transitions. Second operand 8 states. [2020-09-24 19:18:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:21,757 INFO L93 Difference]: Finished difference Result 403 states and 466 transitions. [2020-09-24 19:18:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 19:18:21,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-09-24 19:18:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:21,759 INFO L225 Difference]: With dead ends: 403 [2020-09-24 19:18:21,759 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 19:18:21,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:18:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 19:18:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 210. [2020-09-24 19:18:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-24 19:18:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-09-24 19:18:21,773 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 132 [2020-09-24 19:18:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:21,774 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-09-24 19:18:21,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:18:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-09-24 19:18:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 19:18:21,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:21,776 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:21,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 19:18:21,777 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -625692247, now seen corresponding path program 1 times [2020-09-24 19:18:21,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:21,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644649162] [2020-09-24 19:18:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 19:18:22,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:22,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:18:22,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:18:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:18:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:22,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:22,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:22,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:22,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:18:22,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 19:18:22,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:18:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:18:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:18:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:23,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:23,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 19:18:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:23,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:23,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:18:23,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:18:23,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:18:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 19:18:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:18:23,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-24 19:18:23,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644649162] [2020-09-24 19:18:23,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:23,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:18:23,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179783692] [2020-09-24 19:18:23,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:18:23,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:23,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:18:23,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:18:23,094 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-09-24 19:18:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:23,258 INFO L93 Difference]: Finished difference Result 427 states and 494 transitions. [2020-09-24 19:18:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:18:23,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-09-24 19:18:23,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:23,261 INFO L225 Difference]: With dead ends: 427 [2020-09-24 19:18:23,261 INFO L226 Difference]: Without dead ends: 278 [2020-09-24 19:18:23,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:18:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-09-24 19:18:23,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 220. [2020-09-24 19:18:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-24 19:18:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 253 transitions. [2020-09-24 19:18:23,274 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 253 transitions. Word has length 137 [2020-09-24 19:18:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:23,275 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 253 transitions. [2020-09-24 19:18:23,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:18:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 253 transitions. [2020-09-24 19:18:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 19:18:23,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:23,277 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:23,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 19:18:23,278 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:23,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1407682377, now seen corresponding path program 2 times [2020-09-24 19:18:23,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:23,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739188346] [2020-09-24 19:18:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 19:18:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:18:24,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:18:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:18:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:18:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:24,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:24,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:24,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:18:24,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:24,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:24,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:18:24,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 19:18:24,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:18:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 19:18:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:18:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:18:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:24,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:18:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 19:18:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:18:24,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:18:24,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:18:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 19:18:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:18:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 7 proven. 65 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 19:18:24,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739188346] [2020-09-24 19:18:24,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:24,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:18:24,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196307658] [2020-09-24 19:18:24,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:18:24,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:24,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:18:24,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:18:24,731 INFO L87 Difference]: Start difference. First operand 220 states and 253 transitions. Second operand 9 states. [2020-09-24 19:18:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:24,941 INFO L93 Difference]: Finished difference Result 405 states and 469 transitions. [2020-09-24 19:18:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:18:24,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-09-24 19:18:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:24,944 INFO L225 Difference]: With dead ends: 405 [2020-09-24 19:18:24,944 INFO L226 Difference]: Without dead ends: 258 [2020-09-24 19:18:24,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:18:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-24 19:18:24,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 220. [2020-09-24 19:18:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-24 19:18:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 253 transitions. [2020-09-24 19:18:24,957 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 253 transitions. Word has length 137 [2020-09-24 19:18:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:24,957 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 253 transitions. [2020-09-24 19:18:24,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:18:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 253 transitions. [2020-09-24 19:18:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 19:18:24,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:24,960 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:24,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 19:18:24,960 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:24,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:24,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1795508063, now seen corresponding path program 2 times [2020-09-24 19:18:24,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:24,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458055248] [2020-09-24 19:18:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 19:18:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:18:25,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:18:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 19:18:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 19:18:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:26,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:18:26,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:26,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:18:26,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:18:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 19:18:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-24 19:18:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:18:26,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 19:18:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:26,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:18:26,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:18:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-24 19:18:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:18:26,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:18:26,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:18:26,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:18:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-24 19:18:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:26,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:26,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:18:26,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:18:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:18:26,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 19:18:26,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-09-24 19:18:26,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458055248] [2020-09-24 19:18:26,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:26,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:18:26,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501368836] [2020-09-24 19:18:26,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:18:26,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:26,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:18:26,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:18:26,481 INFO L87 Difference]: Start difference. First operand 220 states and 253 transitions. Second operand 9 states. [2020-09-24 19:18:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:26,778 INFO L93 Difference]: Finished difference Result 288 states and 339 transitions. [2020-09-24 19:18:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:18:26,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-09-24 19:18:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:26,782 INFO L225 Difference]: With dead ends: 288 [2020-09-24 19:18:26,782 INFO L226 Difference]: Without dead ends: 251 [2020-09-24 19:18:26,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:18:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-24 19:18:26,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 209. [2020-09-24 19:18:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 19:18:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 239 transitions. [2020-09-24 19:18:26,802 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 239 transitions. Word has length 142 [2020-09-24 19:18:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:26,802 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 239 transitions. [2020-09-24 19:18:26,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:18:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 239 transitions. [2020-09-24 19:18:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 19:18:26,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:18:26,807 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 10, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:18:26,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 19:18:26,808 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:18:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:18:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1796372524, now seen corresponding path program 1 times [2020-09-24 19:18:26,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:18:26,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021811789] [2020-09-24 19:18:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:18:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:27,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:27,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:27,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 19:18:27,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:18:27,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:18:27,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 19:18:27,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:18:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:18:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:27,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:27,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:18:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:18:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:18:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:18:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:27,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 19:18:28,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 19:18:28,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:18:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 19:18:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 19:18:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 19:18:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 19:18:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:18:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 19:18:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 19:18:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 19:18:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:18:28,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:18:28,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:18:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 19:18:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:18:28,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:18:28,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:18:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 19:18:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:18:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:18:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:18:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:18:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:18:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:18:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:18:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:18:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 19:18:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:18:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:18:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-09-24 19:18:28,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021811789] [2020-09-24 19:18:28,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:18:28,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-24 19:18:28,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605076307] [2020-09-24 19:18:28,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:18:28,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:18:28,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:18:28,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:18:28,326 INFO L87 Difference]: Start difference. First operand 209 states and 239 transitions. Second operand 4 states. [2020-09-24 19:18:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:18:28,357 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-09-24 19:18:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:18:28,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-09-24 19:18:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:18:28,358 INFO L225 Difference]: With dead ends: 213 [2020-09-24 19:18:28,358 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:18:28,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:18:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:18:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:18:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:18:28,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:18:28,360 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2020-09-24 19:18:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:18:28,360 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:18:28,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:18:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:18:28,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:18:28,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-24 19:18:28,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:18:28,777 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-09-24 19:18:29,163 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-09-24 19:18:29,436 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-09-24 19:18:29,556 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 6 [2020-09-24 19:18:29,918 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 135 [2020-09-24 19:18:30,220 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 104 [2020-09-24 19:18:30,973 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 148 [2020-09-24 19:18:31,161 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-09-24 19:18:32,309 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 222 DAG size of output: 184 [2020-09-24 19:18:32,960 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 201 [2020-09-24 19:18:33,297 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 120 [2020-09-24 19:18:33,727 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 135 [2020-09-24 19:18:34,134 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 163 [2020-09-24 19:18:35,475 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 27 [2020-09-24 19:18:35,988 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 23 [2020-09-24 19:18:36,041 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 19:18:36,041 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:18:36,041 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 19:18:36,041 INFO L268 CegarLoopResult]: For program point L19(lines 19 24) no Hoare annotation was computed. [2020-09-24 19:18:36,042 INFO L268 CegarLoopResult]: For program point L48(lines 47 62) no Hoare annotation was computed. [2020-09-24 19:18:36,042 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 19:18:36,042 INFO L264 CegarLoopResult]: At program point L69(lines 18 71) the Hoare annotation is: (or (= base2flt_~__retres4~0 0) (not (= |base2flt_#in~m| 0)) (and (<= (+ |base2flt_#in~e| 123) 0) (<= |base2flt_#in~e| (+ base2flt_~e 5))) (and (<= (div base2flt_~m 4294967296) 0) (or (= base2flt_~e 0) (= base2flt_~e |base2flt_#in~e|)) (not (= |base2flt_#in~e| 0)) (<= |base2flt_#in~m| base2flt_~m))) [2020-09-24 19:18:36,042 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 19:18:36,042 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-24 19:18:36,042 INFO L268 CegarLoopResult]: For program point L28(lines 27 42) no Hoare annotation was computed. [2020-09-24 19:18:36,043 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 19:18:36,043 INFO L268 CegarLoopResult]: For program point L49(lines 47 62) no Hoare annotation was computed. [2020-09-24 19:18:36,043 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:18:36,043 INFO L268 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2020-09-24 19:18:36,043 INFO L264 CegarLoopResult]: At program point L37-1(lines 27 42) the Hoare annotation is: (not (= |base2flt_#in~m| 0)) [2020-09-24 19:18:36,043 INFO L268 CegarLoopResult]: For program point L25(lines 25 65) no Hoare annotation was computed. [2020-09-24 19:18:36,043 INFO L271 CegarLoopResult]: At program point base2fltENTRY(lines 14 72) the Hoare annotation is: true [2020-09-24 19:18:36,043 INFO L268 CegarLoopResult]: For program point base2fltFINAL(lines 14 72) no Hoare annotation was computed. [2020-09-24 19:18:36,044 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 19:18:36,044 INFO L264 CegarLoopResult]: At program point L63(lines 25 65) the Hoare annotation is: (not (= |base2flt_#in~m| 0)) [2020-09-24 19:18:36,044 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 19:18:36,044 INFO L268 CegarLoopResult]: For program point base2fltEXIT(lines 14 72) no Hoare annotation was computed. [2020-09-24 19:18:36,044 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 19:18:36,044 INFO L268 CegarLoopResult]: For program point L14(lines 14 72) no Hoare annotation was computed. [2020-09-24 19:18:36,044 INFO L264 CegarLoopResult]: At program point L47-2(lines 47 62) the Hoare annotation is: (let ((.cse0 (+ (div base2flt_~m 4294967296) 1))) (and (or (<= 16777216 |base2flt_#in~m|) (<= (+ |base2flt_#in~m| 1) 0)) (or (<= base2flt_~m |base2flt_#in~m|) (<= .cse0 0)) (<= |base2flt_#in~e| base2flt_~e) (or (< 0 .cse0) (<= |base2flt_#in~m| base2flt_~m)))) [2020-09-24 19:18:36,044 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-24 19:18:36,045 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 19:18:36,049 INFO L268 CegarLoopResult]: For program point L192(line 192) no Hoare annotation was computed. [2020-09-24 19:18:36,049 INFO L268 CegarLoopResult]: For program point mulfltEXIT(lines 137 209) no Hoare annotation was computed. [2020-09-24 19:18:36,049 INFO L268 CegarLoopResult]: For program point L184(lines 184 201) no Hoare annotation was computed. [2020-09-24 19:18:36,049 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-09-24 19:18:36,049 INFO L268 CegarLoopResult]: For program point L184-2(lines 184 201) no Hoare annotation was computed. [2020-09-24 19:18:36,049 INFO L268 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L193(lines 193 198) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L185(lines 185 190) no Hoare annotation was computed. [2020-09-24 19:18:36,050 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-09-24 19:18:36,051 INFO L268 CegarLoopResult]: For program point L148(lines 148 154) no Hoare annotation was computed. [2020-09-24 19:18:36,051 INFO L268 CegarLoopResult]: For program point L148-2(lines 147 208) no Hoare annotation was computed. [2020-09-24 19:18:36,051 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-24 19:18:36,051 INFO L264 CegarLoopResult]: At program point L206(lines 147 208) the Hoare annotation is: (or (and (<= mulflt_~__retres10~1 0) (<= 0 mulflt_~__retres10~1) (= mulflt_~b |mulflt_#in~b|)) (<= |mulflt_#in~b| (+ (* 4294967296 (div (+ |mulflt_#in~b| (- 1)) 4294967296)) 4294967295))) [2020-09-24 19:18:36,051 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-24 19:18:36,051 INFO L268 CegarLoopResult]: For program point L169(lines 169 174) no Hoare annotation was computed. [2020-09-24 19:18:36,052 INFO L268 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-09-24 19:18:36,055 INFO L268 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-09-24 19:18:36,055 INFO L268 CegarLoopResult]: For program point L161(line 161) no Hoare annotation was computed. [2020-09-24 19:18:36,055 INFO L268 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-09-24 19:18:36,055 INFO L268 CegarLoopResult]: For program point L182(line 182) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L203(line 203) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L137(lines 137 209) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-09-24 19:18:36,056 INFO L268 CegarLoopResult]: For program point mulfltFINAL(lines 137 209) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L271 CegarLoopResult]: At program point mulfltENTRY(lines 137 209) the Hoare annotation is: true [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L175(lines 175 180) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L204(line 204) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-09-24 19:18:36,057 INFO L268 CegarLoopResult]: For program point L167(line 167) no Hoare annotation was computed. [2020-09-24 19:18:36,058 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-09-24 19:18:36,060 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:18:36,060 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:18:36,060 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:18:36,060 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:18:36,060 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-09-24 19:18:36,060 INFO L268 CegarLoopResult]: For program point L250(lines 250 254) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 210 266) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L250-2(lines 250 254) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L246(lines 246 262) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L246-1(lines 246 262) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L213-1(line 213) no Hoare annotation was computed. [2020-09-24 19:18:36,061 INFO L268 CegarLoopResult]: For program point L213-2(line 213) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L234(line 234) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L264 CegarLoopResult]: At program point L230(line 230) the Hoare annotation is: (and (<= 0 main_~zero~0) (<= main_~zero~0 0)) [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L230-1(line 230) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L230-2(line 230) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L222(line 222) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L251(line 251) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-09-24 19:18:36,062 INFO L268 CegarLoopResult]: For program point L247(lines 247 256) no Hoare annotation was computed. [2020-09-24 19:18:36,063 INFO L268 CegarLoopResult]: For program point L214(line 214) no Hoare annotation was computed. [2020-09-24 19:18:36,065 INFO L264 CegarLoopResult]: At program point L247-2(lines 247 256) the Hoare annotation is: (and (<= main_~tmp___0~0 0) (<= 0 main_~tmp___0~0) (<= (+ (* 4294967296 (div main_~b~0 4294967296)) main_~zero~0) (+ (* 4294967296 (div main_~zero~0 4294967296)) main_~b~0)) (<= main_~tmp___1~0 0) (<= 0 main_~tmp___1~0)) [2020-09-24 19:18:36,065 INFO L268 CegarLoopResult]: For program point L239(line 239) no Hoare annotation was computed. [2020-09-24 19:18:36,065 INFO L268 CegarLoopResult]: For program point L264(line 264) no Hoare annotation was computed. [2020-09-24 19:18:36,065 INFO L264 CegarLoopResult]: At program point L231(line 231) the Hoare annotation is: (and (<= 0 main_~zero~0) (<= main_~zero~0 0)) [2020-09-24 19:18:36,065 INFO L268 CegarLoopResult]: For program point L231-1(line 231) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L231-2(line 231) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L248(line 248) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L215-1(line 215) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L244(line 244) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point L244-1(line 244) no Hoare annotation was computed. [2020-09-24 19:18:36,066 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 210 266) no Hoare annotation was computed. [2020-09-24 19:18:36,067 INFO L268 CegarLoopResult]: For program point L236(lines 236 240) no Hoare annotation was computed. [2020-09-24 19:18:36,067 INFO L268 CegarLoopResult]: For program point L236-2(lines 236 240) no Hoare annotation was computed. [2020-09-24 19:18:36,067 INFO L271 CegarLoopResult]: At program point L228(line 228) the Hoare annotation is: true [2020-09-24 19:18:36,067 INFO L268 CegarLoopResult]: For program point L228-1(line 228) no Hoare annotation was computed. [2020-09-24 19:18:36,067 INFO L268 CegarLoopResult]: For program point L228-2(line 228) no Hoare annotation was computed. [2020-09-24 19:18:36,067 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-09-24 19:18:36,067 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 210 266) the Hoare annotation is: true [2020-09-24 19:18:36,068 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-09-24 19:18:36,069 INFO L268 CegarLoopResult]: For program point L220(line 220) no Hoare annotation was computed. [2020-09-24 19:18:36,069 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-09-24 19:18:36,069 INFO L268 CegarLoopResult]: For program point L216-1(line 216) no Hoare annotation was computed. [2020-09-24 19:18:36,069 INFO L268 CegarLoopResult]: For program point L216-2(line 216) no Hoare annotation was computed. [2020-09-24 19:18:36,070 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-09-24 19:18:36,070 INFO L268 CegarLoopResult]: For program point L212-1(line 212) no Hoare annotation was computed. [2020-09-24 19:18:36,070 INFO L268 CegarLoopResult]: For program point L237(line 237) no Hoare annotation was computed. [2020-09-24 19:18:36,070 INFO L268 CegarLoopResult]: For program point L233(lines 233 242) no Hoare annotation was computed. [2020-09-24 19:18:36,070 INFO L264 CegarLoopResult]: At program point L233-2(lines 233 242) the Hoare annotation is: (let ((.cse1 (div main_~b~0 4294967296))) (let ((.cse0 (<= (+ (* 4294967296 .cse1) main_~zero~0) (+ (* 4294967296 (div main_~zero~0 4294967296)) main_~b~0)))) (or (and .cse0 (= main_~b~0 0)) (and (<= 0 main_~zero~0) (<= 0 (div (+ (* .cse1 4294967296) (* main_~b~0 (- 1))) 4294967296)) (<= main_~zero~0 0)) (<= (+ main_~sb~0 1) 0) (and (<= 1 main_~sb~0) .cse0 (<= 1 main_~tmp~2))))) [2020-09-24 19:18:36,070 INFO L264 CegarLoopResult]: At program point L229(line 229) the Hoare annotation is: (and (<= 0 main_~zero~0) (<= main_~zero~0 0)) [2020-09-24 19:18:36,071 INFO L268 CegarLoopResult]: For program point L229-1(line 229) no Hoare annotation was computed. [2020-09-24 19:18:36,071 INFO L268 CegarLoopResult]: For program point L229-2(line 229) no Hoare annotation was computed. [2020-09-24 19:18:36,071 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-09-24 19:18:36,071 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-09-24 19:18:36,071 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 19:18:36,071 INFO L268 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-09-24 19:18:36,071 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-09-24 19:18:36,072 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-09-24 19:18:36,072 INFO L268 CegarLoopResult]: For program point addfltENTRY(lines 73 136) no Hoare annotation was computed. [2020-09-24 19:18:36,072 INFO L268 CegarLoopResult]: For program point addfltFINAL(lines 73 136) no Hoare annotation was computed. [2020-09-24 19:18:36,072 INFO L268 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2020-09-24 19:18:36,072 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L77(line 77) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L73(lines 73 136) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-09-24 19:18:36,073 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L115(lines 115 126) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L115-2(lines 115 126) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-09-24 19:18:36,074 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L116(lines 116 121) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L108(lines 108 113) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L104-1(line 104) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L133(lines 83 135) no Hoare annotation was computed. [2020-09-24 19:18:36,075 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point addfltEXIT(lines 73 136) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L84(lines 84 90) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L84-2(lines 83 135) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-24 19:18:36,076 INFO L268 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-09-24 19:18:36,077 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-24 19:18:36,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:18:36 BoogieIcfgContainer [2020-09-24 19:18:36,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:18:36,116 INFO L168 Benchmark]: Toolchain (without parser) took 41513.27 ms. Allocated memory was 140.5 MB in the beginning and 505.4 MB in the end (delta: 364.9 MB). Free memory was 103.6 MB in the beginning and 156.4 MB in the end (delta: -52.8 MB). Peak memory consumption was 366.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:18:36,118 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:18:36,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.18 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 182.5 MB in the end (delta: -79.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:18:36,119 INFO L168 Benchmark]: Boogie Preprocessor took 62.27 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:18:36,126 INFO L168 Benchmark]: RCFGBuilder took 682.11 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 147.6 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:18:36,127 INFO L168 Benchmark]: TraceAbstraction took 40152.29 ms. Allocated memory was 203.9 MB in the beginning and 505.4 MB in the end (delta: 301.5 MB). Free memory was 146.9 MB in the beginning and 156.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 346.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:18:36,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.18 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 182.5 MB in the end (delta: -79.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.27 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 682.11 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 147.6 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40152.29 ms. Allocated memory was 203.9 MB in the beginning and 505.4 MB in the end (delta: 301.5 MB). Free memory was 146.9 MB in the beginning and 156.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 346.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !(\old(m) == 0) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((__retres4 == 0 || !(\old(m) == 0)) || (\old(e) + 123 <= 0 && \old(e) <= e + 5)) || (((m / 4294967296 <= 0 && (e == 0 || e == \old(e))) && !(\old(e) == 0)) && \old(m) <= m) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: ((__retres10 <= 0 && 0 <= __retres10) && b == \old(b)) || \old(b) <= 4294967296 * ((\old(b) + -1) / 4294967296) + 4294967295 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((16777216 <= \old(m) || \old(m) + 1 <= 0) && (m <= \old(m) || m / 4294967296 + 1 <= 0)) && \old(e) <= e) && (0 < m / 4294967296 + 1 || \old(m) <= m) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: !(\old(m) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.3s, OverallIterations: 23, TraceHistogramMax: 12, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3118 SDtfs, 1367 SDslu, 10837 SDs, 0 SdLazy, 1413 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 491 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 606 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 311 PreInvPairs, 1278 NumberOfFragments, 228 HoareAnnotationTreeSize, 311 FomulaSimplifications, 1150461375 FormulaSimplificationTreeSizeReduction, 6.4s HoareSimplificationTime, 18 FomulaSimplificationsInter, 24228595 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 27.3s InterpolantComputationTime, 2812 NumberOfCodeBlocks, 2812 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2789 ConstructedInterpolants, 0 QuantifiedInterpolants, 678511 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 1325/1922 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...