/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:19:02,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:19:02,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:19:02,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:19:02,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:19:02,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:19:02,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:19:02,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:19:02,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:19:02,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:19:02,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:19:02,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:19:02,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:19:02,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:19:02,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:19:02,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:19:02,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:19:02,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:19:02,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:19:02,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:19:02,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:19:02,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:19:02,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:19:02,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:19:02,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:19:02,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:19:02,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:19:02,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:19:02,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:19:02,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:19:02,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:19:02,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:19:02,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:19:02,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:19:02,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:19:02,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:19:02,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:19:02,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:19:02,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:19:02,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:19:02,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:19:02,294 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 [2020-08-21 18:19:02,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:19:02,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:19:02,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:19:02,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:19:02,340 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:19:02,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:19:02,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:19:02,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:19:02,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:19:02,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:19:02,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:19:02,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:19:02,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:19:02,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:19:02,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:19:02,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:19:02,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:19:02,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:19:02,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:19:02,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:19:02,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:19:02,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:19:02,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:19:02,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:19:02,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:19:02,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:19:02,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:19:02,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:19:02,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:19:02,346 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:19:02,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:19:02,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:19:02,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:19:02,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:19:02,673 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:19:02,674 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 18:19:02,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab9b2d4f7/9f81c40575384b81aa3f3be613b4c486/FLAG3d34c04d3 [2020-08-21 18:19:03,408 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:19:03,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 18:19:03,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab9b2d4f7/9f81c40575384b81aa3f3be613b4c486/FLAG3d34c04d3 [2020-08-21 18:19:03,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab9b2d4f7/9f81c40575384b81aa3f3be613b4c486 [2020-08-21 18:19:03,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:19:03,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:19:03,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:19:03,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:19:03,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:19:03,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:19:03" (1/1) ... [2020-08-21 18:19:03,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:03, skipping insertion in model container [2020-08-21 18:19:03,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:19:03" (1/1) ... [2020-08-21 18:19:03,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:19:03,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:19:05,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:19:05,303 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:19:06,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:19:06,290 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:19:06,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06 WrapperNode [2020-08-21 18:19:06,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:19:06,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:19:06,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:19:06,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:19:06,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (1/1) ... [2020-08-21 18:19:06,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:19:06,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:19:06,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:19:06,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:19:06,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (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 [2020-08-21 18:19:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:19:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:19:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 18:19:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:19:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:19:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 18:19:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-21 18:19:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 18:19:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 18:19:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:19:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 18:19:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 18:19:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 18:19:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 18:19:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 18:19:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 18:19:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-21 18:19:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 18:19:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 18:19:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:19:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:19:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:19:09,650 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:19:09,650 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 18:19:09,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:19:09 BoogieIcfgContainer [2020-08-21 18:19:09,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:19:09,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:19:09,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:19:09,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:19:09,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:19:03" (1/3) ... [2020-08-21 18:19:09,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0b6e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:19:09, skipping insertion in model container [2020-08-21 18:19:09,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:19:06" (2/3) ... [2020-08-21 18:19:09,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0b6e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:19:09, skipping insertion in model container [2020-08-21 18:19:09,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:19:09" (3/3) ... [2020-08-21 18:19:09,672 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-21 18:19:09,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:19:09,694 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-08-21 18:19:09,709 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-08-21 18:19:09,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:19:09,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:19:09,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:19:09,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:19:09,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:19:09,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:19:09,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:19:09,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:19:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-08-21 18:19:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-21 18:19:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:19:09,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:19:09,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:19:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:19:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-08-21 18:19:09,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:19:09,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981374117] [2020-08-21 18:19:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:19:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:11,760 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 18:19:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:19:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:19:11,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981374117] [2020-08-21 18:19:11,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:19:11,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:19:11,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501577913] [2020-08-21 18:19:11,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:19:11,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:19:11,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:19:11,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:19:11,948 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-08-21 18:19:12,556 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-08-21 18:19:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:19:20,151 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-08-21 18:19:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:19:20,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-08-21 18:19:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:19:20,192 INFO L225 Difference]: With dead ends: 1776 [2020-08-21 18:19:20,192 INFO L226 Difference]: Without dead ends: 1481 [2020-08-21 18:19:20,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:19:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-08-21 18:19:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-08-21 18:19:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-08-21 18:19:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-08-21 18:19:20,357 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-08-21 18:19:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:19:20,364 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-08-21 18:19:20,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:19:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-08-21 18:19:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-21 18:19:20,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:19:20,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:19:20,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:19:20,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:19:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:19:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-08-21 18:19:20,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:19:20,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035547616] [2020-08-21 18:19:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:19:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:21,700 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 18:19:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:19:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:19:21,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035547616] [2020-08-21 18:19:21,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:19:21,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:19:21,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022921585] [2020-08-21 18:19:21,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:19:21,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:19:21,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:19:21,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:19:21,966 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-08-21 18:19:22,644 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-08-21 18:19:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:19:29,288 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-08-21 18:19:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:19:29,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-08-21 18:19:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:19:29,303 INFO L225 Difference]: With dead ends: 2852 [2020-08-21 18:19:29,303 INFO L226 Difference]: Without dead ends: 2439 [2020-08-21 18:19:29,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:19:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-08-21 18:19:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-08-21 18:19:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-08-21 18:19:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-08-21 18:19:29,386 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-08-21 18:19:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:19:29,387 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-08-21 18:19:29,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:19:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-08-21 18:19:29,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-21 18:19:29,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:19:29,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:19:29,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:19:29,397 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:19:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:19:29,397 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-08-21 18:19:29,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:19:29,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139280503] [2020-08-21 18:19:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:19:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:30,535 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 18:19:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:19:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:19:30,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139280503] [2020-08-21 18:19:30,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:19:30,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:19:30,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237766725] [2020-08-21 18:19:30,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:19:30,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:19:30,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:19:30,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:19:30,663 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-08-21 18:19:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:19:39,745 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2020-08-21 18:19:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:19:39,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-08-21 18:19:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:19:39,770 INFO L225 Difference]: With dead ends: 7199 [2020-08-21 18:19:39,770 INFO L226 Difference]: Without dead ends: 4777 [2020-08-21 18:19:39,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:19:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-08-21 18:19:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-08-21 18:19:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-08-21 18:19:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2020-08-21 18:19:40,016 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2020-08-21 18:19:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:19:40,017 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2020-08-21 18:19:40,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:19:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2020-08-21 18:19:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-21 18:19:40,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:19:40,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:19:40,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:19:40,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:19:40,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:19:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-08-21 18:19:40,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:19:40,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650165078] [2020-08-21 18:19:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:19:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:40,771 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 18:19:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:19:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:19:40,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650165078] [2020-08-21 18:19:40,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:19:40,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:19:40,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742441166] [2020-08-21 18:19:40,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:19:40,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:19:40,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:19:40,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:19:40,912 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2020-08-21 18:19:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:19:51,257 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2020-08-21 18:19:51,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:19:51,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-21 18:19:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:19:51,294 INFO L225 Difference]: With dead ends: 13649 [2020-08-21 18:19:51,294 INFO L226 Difference]: Without dead ends: 9125 [2020-08-21 18:19:51,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:19:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2020-08-21 18:19:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2020-08-21 18:19:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-08-21 18:19:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2020-08-21 18:19:51,578 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2020-08-21 18:19:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:19:51,579 INFO L479 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2020-08-21 18:19:51,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:19:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2020-08-21 18:19:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-21 18:19:51,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:19:51,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:19:51,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:19:51,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:19:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:19:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1985882685, now seen corresponding path program 1 times [2020-08-21 18:19:51,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:19:51,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715842071] [2020-08-21 18:19:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:19:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:52,320 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-21 18:19:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:19:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:19:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:19:52,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715842071] [2020-08-21 18:19:52,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:19:52,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:19:52,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344863628] [2020-08-21 18:19:52,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:19:52,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:19:52,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:19:52,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:19:52,415 INFO L87 Difference]: Start difference. First operand 9001 states and 13804 transitions. Second operand 4 states. [2020-08-21 18:20:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:20:03,092 INFO L93 Difference]: Finished difference Result 26928 states and 41288 transitions. [2020-08-21 18:20:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:20:03,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-21 18:20:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:20:03,146 INFO L225 Difference]: With dead ends: 26928 [2020-08-21 18:20:03,147 INFO L226 Difference]: Without dead ends: 17969 [2020-08-21 18:20:03,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:20:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17969 states. [2020-08-21 18:20:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17969 to 9020. [2020-08-21 18:20:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9020 states. [2020-08-21 18:20:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13832 transitions. [2020-08-21 18:20:03,546 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13832 transitions. Word has length 326 [2020-08-21 18:20:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:20:03,546 INFO L479 AbstractCegarLoop]: Abstraction has 9020 states and 13832 transitions. [2020-08-21 18:20:03,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:20:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13832 transitions. [2020-08-21 18:20:03,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-08-21 18:20:03,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:20:03,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:20:03,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:20:03,569 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:20:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:20:03,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1229480868, now seen corresponding path program 1 times [2020-08-21 18:20:03,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:20:03,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456541059] [2020-08-21 18:20:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:20:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat