/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:22:42,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:22:42,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:22:42,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:22:42,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:22:42,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:22:42,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:22:42,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:22:42,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:22:42,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:22:42,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:22:42,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:22:42,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:22:42,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:22:42,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:22:42,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:22:42,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:22:42,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:22:42,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:22:42,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:22:42,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:22:42,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:22:42,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:22:42,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:22:42,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:22:42,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:22:42,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:22:42,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:22:42,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:22:42,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:22:42,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:22:42,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:22:42,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:22:42,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:22:42,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:22:42,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:22:42,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:22:42,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:22:42,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:22:42,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:22:42,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:22:42,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:22:42,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:22:42,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:22:42,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:22:42,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:22:42,482 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:22:42,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:22:42,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:22:42,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:22:42,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:22:42,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:22:42,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:22:42,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:22:42,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:22:42,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:22:42,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:22:42,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:22:42,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:22:42,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:22:42,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:22:42,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:22:42,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:22:42,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:22:42,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:22:42,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:22:42,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:22:42,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:22:42,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:22:42,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:22:42,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:22:42,492 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:22:42,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:22:42,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:22:42,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:22:42,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:22:42,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:22:42,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_m4.c [2020-10-13 23:22:42,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bfd34b3/364f377b02b54461a1d2b895bc2ff4be/FLAG1ad60cbf0 [2020-10-13 23:22:43,545 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:22:43,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_m4.c [2020-10-13 23:22:43,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bfd34b3/364f377b02b54461a1d2b895bc2ff4be/FLAG1ad60cbf0 [2020-10-13 23:22:43,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95bfd34b3/364f377b02b54461a1d2b895bc2ff4be [2020-10-13 23:22:43,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:22:43,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:22:43,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:22:43,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:22:43,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:22:43,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:22:43" (1/1) ... [2020-10-13 23:22:43,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76095f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:43, skipping insertion in model container [2020-10-13 23:22:43,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:22:43" (1/1) ... [2020-10-13 23:22:43,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:22:43,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:22:44,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:22:44,067 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:22:44,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:22:44,114 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:22:44,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44 WrapperNode [2020-10-13 23:22:44,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:22:44,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:22:44,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:22:44,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:22:44,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... [2020-10-13 23:22:44,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:22:44,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:22:44,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:22:44,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:22:44,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:22:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:22:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:22:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:22:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:22:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:22:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:22:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:22:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:22:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:22:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-13 23:22:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:22:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:22:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:22:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:22:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:22:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:22:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:22:44,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:22:44,644 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-13 23:22:44,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:22:44 BoogieIcfgContainer [2020-10-13 23:22:44,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:22:44,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:22:44,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:22:44,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:22:44,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:22:43" (1/3) ... [2020-10-13 23:22:44,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a4e810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:22:44, skipping insertion in model container [2020-10-13 23:22:44,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:22:44" (2/3) ... [2020-10-13 23:22:44,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a4e810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:22:44, skipping insertion in model container [2020-10-13 23:22:44,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:22:44" (3/3) ... [2020-10-13 23:22:44,660 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_m4.c [2020-10-13 23:22:44,674 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:22:44,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:22:44,700 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:22:44,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:22:44,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:22:44,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:22:44,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:22:44,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:22:44,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:22:44,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:22:44,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:22:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-13 23:22:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 23:22:44,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:44,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:44,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:44,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1372119815, now seen corresponding path program 1 times [2020-10-13 23:22:44,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:44,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701108742] [2020-10-13 23:22:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:47,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:48,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:22:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:22:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3763 [2020-10-13 23:22:48,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:48,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:22:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:22:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:48,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:48,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:48,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:48,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:22:48,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:48,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:22:48,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701108742] [2020-10-13 23:22:48,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:22:48,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:22:48,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723526011] [2020-10-13 23:22:48,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:22:48,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:48,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:22:48,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:22:48,851 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-10-13 23:22:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:49,054 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2020-10-13 23:22:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:22:49,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-13 23:22:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:49,072 INFO L225 Difference]: With dead ends: 83 [2020-10-13 23:22:49,072 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:22:49,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:22:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:22:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-13 23:22:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:22:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-13 23:22:49,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2020-10-13 23:22:49,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:49,140 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-13 23:22:49,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:22:49,141 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-13 23:22:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 23:22:49,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:49,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:49,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:22:49,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:49,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1010830987, now seen corresponding path program 1 times [2020-10-13 23:22:49,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:49,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874888903] [2020-10-13 23:22:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:22:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:22:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:22:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:54,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:22:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:22:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:22:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:54,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:54,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:54,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:22:54,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:54,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:22:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:22:54,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874888903] [2020-10-13 23:22:54,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:22:54,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:22:54,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636303612] [2020-10-13 23:22:54,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:22:54,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:54,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:22:54,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:22:54,260 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2020-10-13 23:22:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:54,399 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-13 23:22:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:22:54,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-13 23:22:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:54,401 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:22:54,401 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:22:54,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:22:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:22:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:22:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:22:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-13 23:22:54,412 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 28 [2020-10-13 23:22:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:54,412 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-13 23:22:54,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:22:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-13 23:22:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:22:54,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:54,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:54,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:22:54,415 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:54,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:54,415 INFO L82 PathProgramCache]: Analyzing trace with hash 195310771, now seen corresponding path program 1 times [2020-10-13 23:22:54,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:54,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219200750] [2020-10-13 23:22:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:59,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:22:59,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:22:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:22:59,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:59,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:22:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:22:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:22:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:22:59,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:59,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:22:59,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:59,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:22:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:22:59,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219200750] [2020-10-13 23:22:59,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:22:59,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:22:59,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423556078] [2020-10-13 23:22:59,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:22:59,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:22:59,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:22:59,528 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 5 states. [2020-10-13 23:22:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:59,778 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2020-10-13 23:22:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:22:59,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-13 23:22:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:59,780 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:22:59,781 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 23:22:59,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:22:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 23:22:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-10-13 23:22:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:22:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-13 23:22:59,800 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2020-10-13 23:22:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:59,801 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-13 23:22:59,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:22:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-13 23:22:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:22:59,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:59,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:59,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:22:59,806 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:59,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:59,807 INFO L82 PathProgramCache]: Analyzing trace with hash -272812125, now seen corresponding path program 1 times [2020-10-13 23:22:59,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:59,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13484715] [2020-10-13 23:22:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:04,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:04,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:23:04,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:23:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:23:04,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:04,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:23:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:23:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:04,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:04,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:04,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:04,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:04,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:04,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 23:23:04,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13484715] [2020-10-13 23:23:04,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:04,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:23:04,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980326837] [2020-10-13 23:23:04,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:23:04,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:04,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:23:04,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:23:04,899 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 6 states. [2020-10-13 23:23:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:05,151 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-13 23:23:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:23:05,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-13 23:23:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:05,153 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:23:05,153 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 23:23:05,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:23:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 23:23:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-13 23:23:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:23:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-13 23:23:05,173 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 46 [2020-10-13 23:23:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:05,173 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-13 23:23:05,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:23:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-13 23:23:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 23:23:05,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:05,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:05,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:23:05,178 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1413552787, now seen corresponding path program 2 times [2020-10-13 23:23:05,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:05,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938425386] [2020-10-13 23:23:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:05,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:23:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:23:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:23:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:10,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:23:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:23:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:10,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:10,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:10,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 23:23:10,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938425386] [2020-10-13 23:23:10,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:10,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:23:10,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787791061] [2020-10-13 23:23:10,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:23:10,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:10,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:23:10,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:23:10,259 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 5 states. [2020-10-13 23:23:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:10,385 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2020-10-13 23:23:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:23:10,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-13 23:23:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:10,387 INFO L225 Difference]: With dead ends: 118 [2020-10-13 23:23:10,387 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 23:23:10,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:23:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 23:23:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-13 23:23:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:23:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-13 23:23:10,395 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 62 [2020-10-13 23:23:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:10,395 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-13 23:23:10,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:23:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-13 23:23:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 23:23:10,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:10,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:10,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:23:10,397 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1171459665, now seen corresponding path program 3 times [2020-10-13 23:23:10,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:10,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787273776] [2020-10-13 23:23:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:15,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:15,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:23:15,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:23:15,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-13 23:23:15,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:15,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:15,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-13 23:23:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:15,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:23:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:18,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:18,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:18,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:23:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:18,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:23:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:23:18,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787273776] [2020-10-13 23:23:18,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:18,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-13 23:23:18,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322552029] [2020-10-13 23:23:18,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-13 23:23:18,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:18,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-13 23:23:18,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1663, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 23:23:18,707 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 43 states. [2020-10-13 23:23:19,499 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-13 23:23:19,868 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2020-10-13 23:23:20,449 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-10-13 23:23:20,735 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-13 23:23:21,108 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-13 23:23:21,360 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-13 23:23:22,545 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-13 23:23:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:23,451 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-10-13 23:23:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-13 23:23:23,451 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 64 [2020-10-13 23:23:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:23,454 INFO L225 Difference]: With dead ends: 126 [2020-10-13 23:23:23,454 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 23:23:23,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=320, Invalid=3840, Unknown=0, NotChecked=0, Total=4160 [2020-10-13 23:23:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 23:23:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-10-13 23:23:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 23:23:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-13 23:23:23,470 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 64 [2020-10-13 23:23:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:23,471 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-13 23:23:23,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-13 23:23:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-13 23:23:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:23:23,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:23,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:23,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:23:23,473 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1270458767, now seen corresponding path program 4 times [2020-10-13 23:23:23,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:23,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680070638] [2020-10-13 23:23:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 23:23:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:23:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:23:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:28,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:23:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:23:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:23:28,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680070638] [2020-10-13 23:23:28,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:28,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:23:28,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109806644] [2020-10-13 23:23:28,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:23:28,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:23:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:23:28,625 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 10 states. [2020-10-13 23:23:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:29,062 INFO L93 Difference]: Finished difference Result 165 states and 188 transitions. [2020-10-13 23:23:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:23:29,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-13 23:23:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:29,064 INFO L225 Difference]: With dead ends: 165 [2020-10-13 23:23:29,064 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:23:29,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:23:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:23:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:23:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:23:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-13 23:23:29,074 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 66 [2020-10-13 23:23:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:29,075 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-13 23:23:29,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:23:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-13 23:23:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:23:29,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:29,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:29,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:23:29,076 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:29,077 INFO L82 PathProgramCache]: Analyzing trace with hash 448203407, now seen corresponding path program 5 times [2020-10-13 23:23:29,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:29,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356644616] [2020-10-13 23:23:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 23:23:34,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:23:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:23:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:34,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:23:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:23:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:23:34,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356644616] [2020-10-13 23:23:34,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:34,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:23:34,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081437130] [2020-10-13 23:23:34,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:23:34,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:34,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:23:34,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:23:34,182 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 10 states. [2020-10-13 23:23:34,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:34,555 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-10-13 23:23:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:23:34,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-13 23:23:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:34,556 INFO L225 Difference]: With dead ends: 130 [2020-10-13 23:23:34,556 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 23:23:34,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:23:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 23:23:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-13 23:23:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:23:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-13 23:23:34,569 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 66 [2020-10-13 23:23:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:34,570 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-13 23:23:34,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:23:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-13 23:23:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 23:23:34,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:34,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:34,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:23:34,572 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash 815682943, now seen corresponding path program 6 times [2020-10-13 23:23:34,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:34,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825249380] [2020-10-13 23:23:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:39,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:39,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 23:23:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:43,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:43,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:23:43,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825249380] [2020-10-13 23:23:43,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:43,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-13 23:23:43,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407149052] [2020-10-13 23:23:43,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-13 23:23:43,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:43,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-13 23:23:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=2248, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 23:23:43,755 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 49 states. [2020-10-13 23:23:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:46,996 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2020-10-13 23:23:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 23:23:46,997 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 82 [2020-10-13 23:23:46,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:46,999 INFO L225 Difference]: With dead ends: 146 [2020-10-13 23:23:46,999 INFO L226 Difference]: Without dead ends: 141 [2020-10-13 23:23:47,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=114, Invalid=2436, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 23:23:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-13 23:23:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2020-10-13 23:23:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 23:23:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2020-10-13 23:23:47,034 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 82 [2020-10-13 23:23:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:47,035 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2020-10-13 23:23:47,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-13 23:23:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2020-10-13 23:23:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:23:47,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:47,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:47,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:23:47,042 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:47,043 INFO L82 PathProgramCache]: Analyzing trace with hash -868139715, now seen corresponding path program 7 times [2020-10-13 23:23:47,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:47,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067130260] [2020-10-13 23:23:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:52,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 23:23:52,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:23:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:23:52,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:52,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:23:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 23:23:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:52,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:52,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:23:52,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:52,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:52,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 23:23:52,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067130260] [2020-10-13 23:23:52,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:52,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:23:52,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242390309] [2020-10-13 23:23:52,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:23:52,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:52,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:23:52,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:23:52,184 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand 12 states. [2020-10-13 23:23:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:52,735 INFO L93 Difference]: Finished difference Result 266 states and 296 transitions. [2020-10-13 23:23:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:23:52,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-10-13 23:23:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:52,738 INFO L225 Difference]: With dead ends: 266 [2020-10-13 23:23:52,738 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 23:23:52,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:23:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 23:23:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2020-10-13 23:23:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-13 23:23:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2020-10-13 23:23:52,753 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 84 [2020-10-13 23:23:52,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:52,753 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2020-10-13 23:23:52,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:23:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2020-10-13 23:23:52,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:23:52,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:52,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:52,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:23:52,755 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:52,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash -262492549, now seen corresponding path program 8 times [2020-10-13 23:23:52,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:52,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141469224] [2020-10-13 23:23:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:57,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:57,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 23:23:57,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:23:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:23:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:57,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:57,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:23:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:23:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:23:57,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:23:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:57,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:23:57,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:23:57,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:23:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:23:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:23:57,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:23:57,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:23:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:23:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:23:57,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:23:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:23:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 23:23:57,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141469224] [2020-10-13 23:23:57,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:23:57,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:23:57,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313675064] [2020-10-13 23:23:57,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:23:57,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:23:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:23:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:23:57,899 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand 12 states. [2020-10-13 23:23:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:23:58,563 INFO L93 Difference]: Finished difference Result 207 states and 235 transitions. [2020-10-13 23:23:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:23:58,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-10-13 23:23:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:23:58,565 INFO L225 Difference]: With dead ends: 207 [2020-10-13 23:23:58,566 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 23:23:58,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:23:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 23:23:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-13 23:23:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:23:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-13 23:23:58,597 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 86 [2020-10-13 23:23:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:23:58,597 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-13 23:23:58,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:23:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-13 23:23:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 23:23:58,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:23:58,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:23:58,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:23:58,602 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:23:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:23:58,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1253839571, now seen corresponding path program 9 times [2020-10-13 23:23:58,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:23:58,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330445237] [2020-10-13 23:23:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:23:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:23:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:03,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:24:03,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:24:03,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:24:03,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:03,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:03,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-13 23:24:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:24:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 23:24:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:24:14,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:24:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:14,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:14,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:24:14,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:24:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:24:14,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:14,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:24:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:24:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:24:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 2 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:24:14,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330445237] [2020-10-13 23:24:14,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:24:14,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-13 23:24:14,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344745320] [2020-10-13 23:24:14,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-13 23:24:14,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:24:14,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-13 23:24:14,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=5207, Unknown=0, NotChecked=0, Total=5402 [2020-10-13 23:24:14,642 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 74 states. [2020-10-13 23:24:15,054 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 3 [2020-10-13 23:24:15,600 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 15 [2020-10-13 23:24:21,101 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-13 23:24:23,484 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 23:24:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:24:27,681 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2020-10-13 23:24:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-13 23:24:27,682 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 100 [2020-10-13 23:24:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:24:27,684 INFO L225 Difference]: With dead ends: 198 [2020-10-13 23:24:27,684 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 23:24:27,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=479, Invalid=10651, Unknown=0, NotChecked=0, Total=11130 [2020-10-13 23:24:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 23:24:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 166. [2020-10-13 23:24:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-13 23:24:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2020-10-13 23:24:27,701 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 100 [2020-10-13 23:24:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:24:27,701 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2020-10-13 23:24:27,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-13 23:24:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2020-10-13 23:24:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:24:27,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:24:27,703 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:24:27,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:24:27,703 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:24:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:24:27,703 INFO L82 PathProgramCache]: Analyzing trace with hash -288816789, now seen corresponding path program 10 times [2020-10-13 23:24:27,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:24:27,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505489117] [2020-10-13 23:24:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:24:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:27,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:24:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:24:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:24:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:32,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:24:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:24:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:24:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:24:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:32,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:32,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:32,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:24:32,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:24:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:24:32,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:32,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:24:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:24:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:24:32,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 23:24:32,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505489117] [2020-10-13 23:24:32,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:24:32,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:24:32,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344831024] [2020-10-13 23:24:32,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:24:32,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:24:32,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:24:32,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:24:32,887 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand 14 states. [2020-10-13 23:24:33,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:24:33,664 INFO L93 Difference]: Finished difference Result 251 states and 273 transitions. [2020-10-13 23:24:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:24:33,665 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-10-13 23:24:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:24:33,667 INFO L225 Difference]: With dead ends: 251 [2020-10-13 23:24:33,667 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:24:33,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:24:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:24:33,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:24:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:24:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-10-13 23:24:33,676 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 102 [2020-10-13 23:24:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:24:33,676 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-10-13 23:24:33,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:24:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-10-13 23:24:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:24:33,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:24:33,678 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:24:33,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:24:33,678 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:24:33,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:24:33,679 INFO L82 PathProgramCache]: Analyzing trace with hash 192881259, now seen corresponding path program 11 times [2020-10-13 23:24:33,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:24:33,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139973847] [2020-10-13 23:24:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:24:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:24:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:24:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:24:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:38,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:24:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:24:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:24:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:24:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:38,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:24:38,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:24:38,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:24:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:38,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:24:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:24:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:24:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:24:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 23:24:38,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139973847] [2020-10-13 23:24:38,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:24:38,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:24:38,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019626875] [2020-10-13 23:24:38,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:24:38,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:24:38,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:24:38,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:24:38,896 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 14 states. [2020-10-13 23:24:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:24:39,654 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2020-10-13 23:24:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:24:39,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-10-13 23:24:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:24:39,656 INFO L225 Difference]: With dead ends: 194 [2020-10-13 23:24:39,657 INFO L226 Difference]: Without dead ends: 119 [2020-10-13 23:24:39,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:24:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-13 23:24:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-10-13 23:24:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 23:24:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-10-13 23:24:39,667 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 102 [2020-10-13 23:24:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:24:39,668 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-10-13 23:24:39,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:24:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-10-13 23:24:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 23:24:39,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:24:39,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:24:39,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:24:39,670 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:24:39,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:24:39,670 INFO L82 PathProgramCache]: Analyzing trace with hash -512707237, now seen corresponding path program 12 times [2020-10-13 23:24:39,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:24:39,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930416436] [2020-10-13 23:24:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:24:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:24:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:24:44,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:24:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 23:24:44,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:24:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:24:44,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:24:44,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:24:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-13 23:24:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:24:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 23:24:44,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:24:46,338 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-13 23:24:46,492 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-13 23:24:46,666 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-13 23:24:46,854 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-13 23:24:47,043 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-13 23:24:47,238 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-13 23:24:47,445 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-13 23:24:47,662 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-10-13 23:24:47,891 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2020-10-13 23:24:48,141 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-10-13 23:24:48,514 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-10-13 23:24:48,705 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-10-13 23:24:48,901 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-13 23:24:49,094 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-13 23:24:49,294 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-13 23:24:49,507 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-13 23:24:49,735 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-13 23:24:50,002 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-13 23:24:50,268 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-13 23:24:50,541 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 49 [2020-10-13 23:24:50,758 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-13 23:24:50,988 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-13 23:24:51,225 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-13 23:24:51,488 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-13 23:24:51,848 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-13 23:24:52,095 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-10-13 23:24:52,364 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-13 23:24:52,614 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-10-13 23:24:52,879 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-13 23:24:53,150 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-10-13 23:24:53,413 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-13 23:24:53,769 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-10-13 23:24:54,124 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2020-10-13 23:24:54,440 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-10-13 23:24:54,761 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-13 23:24:55,094 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2020-10-13 23:24:55,450 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-13 23:24:55,733 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 23:24:56,029 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 23:24:56,331 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-13 23:24:57,108 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-13 23:24:57,533 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-13 23:24:57,849 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-13 23:24:58,172 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-13 23:24:58,479 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-13 23:24:58,798 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-13 23:24:59,728 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-10-13 23:25:00,085 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-10-13 23:25:00,432 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-13 23:25:00,779 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 23:25:01,443 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-13 23:25:02,159 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-13 23:25:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:25:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:25:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:25:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:25:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:25:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:25:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 14 proven. 186 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 23:25:05,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930416436] [2020-10-13 23:25:05,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:25:05,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-10-13 23:25:05,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508670405] [2020-10-13 23:25:05,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-10-13 23:25:05,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:25:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-10-13 23:25:05,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=7180, Unknown=0, NotChecked=0, Total=7482 [2020-10-13 23:25:05,811 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 87 states. [2020-10-13 23:25:06,253 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 3 [2020-10-13 23:25:06,822 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 15 [2020-10-13 23:25:07,789 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-13 23:25:08,530 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 91 [2020-10-13 23:25:09,125 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2020-10-13 23:25:09,718 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-13 23:25:10,191 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-13 23:25:10,561 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-10-13 23:25:10,881 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-13 23:25:11,157 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-13 23:25:11,433 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-13 23:25:11,941 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-10-13 23:25:13,392 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2020-10-13 23:25:13,735 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-13 23:25:14,549 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-10-13 23:25:15,154 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2020-10-13 23:25:15,751 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2020-10-13 23:25:16,156 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2020-10-13 23:25:16,514 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-13 23:25:16,884 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-13 23:25:17,861 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 85 [2020-10-13 23:25:18,195 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-10-13 23:25:19,022 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 90 [2020-10-13 23:25:19,883 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 87 [2020-10-13 23:25:20,422 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2020-10-13 23:25:21,062 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 72 [2020-10-13 23:25:22,104 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 84 [2020-10-13 23:25:22,996 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2020-10-13 23:25:23,766 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2020-10-13 23:25:24,570 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 88 [2020-10-13 23:25:25,137 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 65 [2020-10-13 23:25:25,614 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-13 23:25:26,891 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2020-10-13 23:25:27,284 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-13 23:25:27,793 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2020-10-13 23:25:28,340 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-13 23:25:28,953 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 51 [2020-10-13 23:25:29,607 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-13 23:25:30,312 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 50 [2020-10-13 23:25:31,021 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-13 23:25:31,826 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 49 [2020-10-13 23:25:32,520 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-13 23:25:33,590 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2020-10-13 23:25:34,243 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-13 23:25:35,158 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2020-10-13 23:25:35,765 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2020-10-13 23:25:36,251 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-13 23:25:36,644 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-13 23:25:37,133 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-10-13 23:25:37,632 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 47 [2020-10-13 23:25:38,279 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2020-10-13 23:25:38,922 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 49 [2020-10-13 23:25:41,520 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 42 [2020-10-13 23:25:42,317 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-13 23:25:42,812 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-13 23:25:43,871 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 84 [2020-10-13 23:25:44,468 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 47 [2020-10-13 23:25:46,599 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 186 DAG size of output: 108 [2020-10-13 23:25:47,306 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 23:25:48,662 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 98 [2020-10-13 23:25:49,583 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2020-10-13 23:25:50,219 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 47 [2020-10-13 23:25:51,383 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2020-10-13 23:25:52,237 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2020-10-13 23:25:53,014 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-13 23:25:53,828 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2020-10-13 23:25:55,025 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2020-10-13 23:25:55,674 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 47 [2020-10-13 23:25:56,206 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-13 23:25:56,924 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-13 23:25:57,523 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-13 23:25:58,568 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2020-10-13 23:25:59,548 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 80 [2020-10-13 23:26:00,647 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2020-10-13 23:26:01,210 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-13 23:26:02,269 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-13 23:26:03,543 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-10-13 23:26:05,953 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 190 DAG size of output: 99 [2020-10-13 23:26:06,893 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-13 23:26:08,942 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 89 [2020-10-13 23:26:12,022 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2020-10-13 23:26:13,778 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 67 [2020-10-13 23:26:14,966 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 32 [2020-10-13 23:26:17,644 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 247 DAG size of output: 96 [2020-10-13 23:26:18,373 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-13 23:26:20,526 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 180 DAG size of output: 101 [2020-10-13 23:26:22,434 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 90 [2020-10-13 23:26:23,233 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 33 [2020-10-13 23:26:24,458 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-10-13 23:26:26,641 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 215 DAG size of output: 100