/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=BIGGEST --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/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:31:46,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:31:46,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:31:46,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:31:46,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:31:46,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:31:46,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:31:46,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:31:46,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:31:46,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:31:46,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:31:46,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:31:46,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:31:46,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:31:46,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:31:46,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:31:46,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:31:46,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:31:46,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:31:46,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:31:46,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:31:46,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:31:46,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:31:46,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:31:46,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:31:46,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:31:46,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:31:46,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:31:46,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:31:46,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:31:46,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:31:46,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:31:46,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:31:46,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:31:46,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:31:46,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:31:46,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:31:46,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:31:46,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:31:46,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:31:46,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:31:46,282 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 [2020-10-12 19:31:46,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:31:46,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:31:46,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:31:46,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:31:46,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:31:46,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:31:46,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:31:46,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:31:46,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:31:46,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:31:46,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:31:46,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:31:46,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:31:46,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:31:46,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:31:46,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:31:46,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:31:46,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:31:46,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:31:46,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:31:46,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:31:46,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:31:46,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:31:46,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:31:46,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:31:46,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:31:46,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:31:46,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:31:46,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:31:46,318 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:31:46,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:31:46,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:31:46,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:31:46,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:31:46,664 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:31:46,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 19:31:46,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fb39bb7/ac153f16b9cf4cc2a14b885e7fc3e999/FLAG5e2cd443d [2020-10-12 19:31:47,384 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:31:47,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 19:31:47,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fb39bb7/ac153f16b9cf4cc2a14b885e7fc3e999/FLAG5e2cd443d [2020-10-12 19:31:47,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19fb39bb7/ac153f16b9cf4cc2a14b885e7fc3e999 [2020-10-12 19:31:47,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:31:47,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:31:47,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:31:47,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:31:47,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:31:47,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:31:47" (1/1) ... [2020-10-12 19:31:47,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511a8c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:47, skipping insertion in model container [2020-10-12 19:31:47,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:31:47" (1/1) ... [2020-10-12 19:31:47,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:31:47,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:31:48,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:31:48,560 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:31:48,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:31:49,013 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:31:49,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49 WrapperNode [2020-10-12 19:31:49,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:31:49,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:31:49,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:31:49,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:31:49,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (1/1) ... [2020-10-12 19:31:49,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:31:49,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:31:49,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:31:49,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:31:49,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (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 [2020-10-12 19:31:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:31:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:31:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:31:49,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:31:49,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:31:49,282 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:31:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:31:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:31:49,283 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:31:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:31:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:31:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:31:49,284 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:31:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:31:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:31:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:31:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:31:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:31:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:31:51,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:31:51,659 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:31:51,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:31:51 BoogieIcfgContainer [2020-10-12 19:31:51,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:31:51,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:31:51,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:31:51,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:31:51,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:31:47" (1/3) ... [2020-10-12 19:31:51,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179404ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:31:51, skipping insertion in model container [2020-10-12 19:31:51,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:31:49" (2/3) ... [2020-10-12 19:31:51,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179404ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:31:51, skipping insertion in model container [2020-10-12 19:31:51,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:31:51" (3/3) ... [2020-10-12 19:31:51,678 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-12 19:31:51,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:31:51,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-12 19:31:51,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-12 19:31:51,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:31:51,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:31:51,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:31:51,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:31:51,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:31:51,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:31:51,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:31:51,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:31:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states. [2020-10-12 19:31:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:31:51,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:31:51,801 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] [2020-10-12 19:31:51,802 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_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]=== [2020-10-12 19:31:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:31:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2065452195, now seen corresponding path program 1 times [2020-10-12 19:31:51,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:31:51,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076177224] [2020-10-12 19:31:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:31:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:57,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:57,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:31:57,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:31:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:31:57,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:31:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:31:57,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:31:57,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:31:57,705 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-12 19:31:57,990 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-10-12 19:31:58,860 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:31:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:31:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:31:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:31:58,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:31:58,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:31:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:31:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:31:58,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:31:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:31:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:31:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:31:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:31:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:31:58,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076177224] [2020-10-12 19:31:58,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:31:58,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:31:58,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534734853] [2020-10-12 19:31:58,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:31:58,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:31:58,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:31:59,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:31:59,003 INFO L87 Difference]: Start difference. First operand 575 states. Second operand 12 states. [2020-10-12 19:31:59,248 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 19:32:01,263 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 363 DAG size of output: 362 [2020-10-12 19:32:01,689 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 19:32:01,962 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-12 19:32:02,250 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-10-12 19:32:02,500 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 19:32:02,780 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-12 19:32:03,188 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-12 19:32:04,537 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-12 19:32:10,745 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 19:32:11,186 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 19:32:12,128 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-12 19:32:12,459 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-10-12 19:32:12,934 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-12 19:32:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:13,266 INFO L93 Difference]: Finished difference Result 2194 states and 3487 transitions. [2020-10-12 19:32:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:32:13,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:32:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:13,303 INFO L225 Difference]: With dead ends: 2194 [2020-10-12 19:32:13,303 INFO L226 Difference]: Without dead ends: 2105 [2020-10-12 19:32:13,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:32:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2020-10-12 19:32:13,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 569. [2020-10-12 19:32:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-12 19:32:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 701 transitions. [2020-10-12 19:32:13,428 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 701 transitions. Word has length 64 [2020-10-12 19:32:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:13,429 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 701 transitions. [2020-10-12 19:32:13,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:32:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 701 transitions. [2020-10-12 19:32:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:32:13,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:13,434 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] [2020-10-12 19:32:13,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:32:13,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_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]=== [2020-10-12 19:32:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:13,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1513076432, now seen corresponding path program 1 times [2020-10-12 19:32:13,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:13,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851840135] [2020-10-12 19:32:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:13,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:14,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:32:18,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:32:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:32:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:32:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:32:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 19:32:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:19,311 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:32:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:19,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:19,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:19,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:32:19,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:32:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:32:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:32:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:19,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851840135] [2020-10-12 19:32:19,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:19,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:32:19,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698625034] [2020-10-12 19:32:19,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:32:19,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:19,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:32:19,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:32:19,391 INFO L87 Difference]: Start difference. First operand 569 states and 701 transitions. Second operand 7 states. [2020-10-12 19:32:20,247 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-12 19:32:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:24,063 INFO L93 Difference]: Finished difference Result 1491 states and 1926 transitions. [2020-10-12 19:32:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:32:24,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-12 19:32:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:24,074 INFO L225 Difference]: With dead ends: 1491 [2020-10-12 19:32:24,075 INFO L226 Difference]: Without dead ends: 1331 [2020-10-12 19:32:24,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:32:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-10-12 19:32:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 745. [2020-10-12 19:32:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2020-10-12 19:32:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 968 transitions. [2020-10-12 19:32:24,189 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 968 transitions. Word has length 64 [2020-10-12 19:32:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:24,190 INFO L479 AbstractCegarLoop]: Abstraction has 745 states and 968 transitions. [2020-10-12 19:32:24,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:32:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 968 transitions. [2020-10-12 19:32:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:32:24,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:24,196 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] [2020-10-12 19:32:24,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:32:24,197 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_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]=== [2020-10-12 19:32:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1452359371, now seen corresponding path program 1 times [2020-10-12 19:32:24,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:24,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753987824] [2020-10-12 19:32:24,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:25,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:29,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:29,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:32:29,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:32:29,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:32:29,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:32:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:32:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:32:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:30,233 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:32:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 19:32:30,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:32:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:32:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:30,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753987824] [2020-10-12 19:32:30,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:30,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:32:30,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960638196] [2020-10-12 19:32:30,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:32:30,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:30,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:32:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:32:30,328 INFO L87 Difference]: Start difference. First operand 745 states and 968 transitions. Second operand 12 states. [2020-10-12 19:32:32,025 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 332 DAG size of output: 329 [2020-10-12 19:32:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:38,438 INFO L93 Difference]: Finished difference Result 2061 states and 2816 transitions. [2020-10-12 19:32:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:32:38,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:32:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:38,453 INFO L225 Difference]: With dead ends: 2061 [2020-10-12 19:32:38,453 INFO L226 Difference]: Without dead ends: 1923 [2020-10-12 19:32:38,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:32:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-10-12 19:32:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 765. [2020-10-12 19:32:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-10-12 19:32:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 993 transitions. [2020-10-12 19:32:38,579 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 993 transitions. Word has length 64 [2020-10-12 19:32:38,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:38,580 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 993 transitions. [2020-10-12 19:32:38,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:32:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 993 transitions. [2020-10-12 19:32:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:32:38,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:38,582 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] [2020-10-12 19:32:38,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:32:38,583 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_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]=== [2020-10-12 19:32:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1688705004, now seen corresponding path program 1 times [2020-10-12 19:32:38,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:38,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012003294] [2020-10-12 19:32:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:39,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:40,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:43,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:43,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:32:43,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:32:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:32:43,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:32:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:32:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:32:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:44,720 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:32:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:44,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:44,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:32:44,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:44,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012003294] [2020-10-12 19:32:44,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:44,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:32:44,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762839100] [2020-10-12 19:32:44,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:32:44,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:44,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:32:44,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:32:44,810 INFO L87 Difference]: Start difference. First operand 765 states and 993 transitions. Second operand 12 states. [2020-10-12 19:32:46,382 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 327 DAG size of output: 323 [2020-10-12 19:32:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:32:50,041 INFO L93 Difference]: Finished difference Result 1228 states and 1578 transitions. [2020-10-12 19:32:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:32:50,042 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-10-12 19:32:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:32:50,046 INFO L225 Difference]: With dead ends: 1228 [2020-10-12 19:32:50,046 INFO L226 Difference]: Without dead ends: 831 [2020-10-12 19:32:50,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:32:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-12 19:32:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 551. [2020-10-12 19:32:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-12 19:32:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 707 transitions. [2020-10-12 19:32:50,108 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 707 transitions. Word has length 64 [2020-10-12 19:32:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:32:50,109 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 707 transitions. [2020-10-12 19:32:50,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:32:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 707 transitions. [2020-10-12 19:32:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:32:50,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:32:50,111 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] [2020-10-12 19:32:50,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:32:50,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_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]=== [2020-10-12 19:32:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:32:50,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1515414427, now seen corresponding path program 1 times [2020-10-12 19:32:50,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:32:50,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540334161] [2020-10-12 19:32:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:32:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:55,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:55,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:32:55,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:32:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:32:55,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:32:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:32:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:32:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:32:56,393 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:32:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:32:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:32:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:32:56,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:32:56,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:32:56,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:32:56,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 19:32:56,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:32:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:32:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:32:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:32:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:32:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:32:56,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540334161] [2020-10-12 19:32:56,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:32:56,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:32:56,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587139408] [2020-10-12 19:32:56,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:32:56,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:32:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:32:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:32:56,481 INFO L87 Difference]: Start difference. First operand 551 states and 707 transitions. Second operand 15 states. [2020-10-12 19:32:58,269 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 336 DAG size of output: 332 [2020-10-12 19:33:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:03,675 INFO L93 Difference]: Finished difference Result 985 states and 1269 transitions. [2020-10-12 19:33:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:33:03,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-12 19:33:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:03,683 INFO L225 Difference]: With dead ends: 985 [2020-10-12 19:33:03,683 INFO L226 Difference]: Without dead ends: 863 [2020-10-12 19:33:03,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:33:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-12 19:33:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 576. [2020-10-12 19:33:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-12 19:33:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 742 transitions. [2020-10-12 19:33:03,752 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 742 transitions. Word has length 64 [2020-10-12 19:33:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:03,752 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 742 transitions. [2020-10-12 19:33:03,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:33:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 742 transitions. [2020-10-12 19:33:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 19:33:03,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:03,754 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] [2020-10-12 19:33:03,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:33:03,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1672186113, now seen corresponding path program 1 times [2020-10-12 19:33:03,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:03,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113454006] [2020-10-12 19:33:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:05,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 19:33:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:33:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:33:08,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:33:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:33:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:33:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:09,893 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:33:09,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:33:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:33:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:09,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:09,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113454006] [2020-10-12 19:33:09,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:09,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:33:09,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934821289] [2020-10-12 19:33:09,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:33:09,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:09,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:33:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:33:09,947 INFO L87 Difference]: Start difference. First operand 576 states and 742 transitions. Second operand 16 states. [2020-10-12 19:33:11,743 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 339 DAG size of output: 333 [2020-10-12 19:33:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:16,510 INFO L93 Difference]: Finished difference Result 1337 states and 1732 transitions. [2020-10-12 19:33:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:33:16,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-10-12 19:33:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:16,514 INFO L225 Difference]: With dead ends: 1337 [2020-10-12 19:33:16,514 INFO L226 Difference]: Without dead ends: 1031 [2020-10-12 19:33:16,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=210, Invalid=782, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:33:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-10-12 19:33:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 709. [2020-10-12 19:33:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-12 19:33:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 956 transitions. [2020-10-12 19:33:16,621 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 956 transitions. Word has length 64 [2020-10-12 19:33:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:16,621 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 956 transitions. [2020-10-12 19:33:16,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:33:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 956 transitions. [2020-10-12 19:33:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:33:16,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:16,623 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] [2020-10-12 19:33:16,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:33:16,624 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:16,625 INFO L82 PathProgramCache]: Analyzing trace with hash 978887721, now seen corresponding path program 1 times [2020-10-12 19:33:16,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:16,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379377669] [2020-10-12 19:33:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:19,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:21,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:21,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:33:21,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:33:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:33:21,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:33:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:33:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:22,078 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 22 [2020-10-12 19:33:23,181 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:33:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:23,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:23,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379377669] [2020-10-12 19:33:23,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:23,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:33:23,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551941280] [2020-10-12 19:33:23,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:33:23,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:23,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:33:23,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:33:23,245 INFO L87 Difference]: Start difference. First operand 709 states and 956 transitions. Second operand 15 states. [2020-10-12 19:33:24,356 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-12 19:33:25,111 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-12 19:33:25,357 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-12 19:33:25,611 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-12 19:33:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:30,391 INFO L93 Difference]: Finished difference Result 1333 states and 1801 transitions. [2020-10-12 19:33:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:33:30,392 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 19:33:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:30,396 INFO L225 Difference]: With dead ends: 1333 [2020-10-12 19:33:30,397 INFO L226 Difference]: Without dead ends: 1324 [2020-10-12 19:33:30,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 19:33:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-10-12 19:33:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 709. [2020-10-12 19:33:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-10-12 19:33:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 955 transitions. [2020-10-12 19:33:30,518 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 955 transitions. Word has length 66 [2020-10-12 19:33:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:30,518 INFO L479 AbstractCegarLoop]: Abstraction has 709 states and 955 transitions. [2020-10-12 19:33:30,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:33:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 955 transitions. [2020-10-12 19:33:30,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:33:30,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:30,521 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] [2020-10-12 19:33:30,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:33:30,521 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:30,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:30,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2117479103, now seen corresponding path program 1 times [2020-10-12 19:33:30,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:30,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417554611] [2020-10-12 19:33:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:30,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:35,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:35,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:33:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:33:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:33:35,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:33:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:33:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:36,535 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:33:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:33:36,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:36,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417554611] [2020-10-12 19:33:36,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:36,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:33:36,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480151793] [2020-10-12 19:33:36,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:33:36,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:36,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:33:36,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:33:36,587 INFO L87 Difference]: Start difference. First operand 709 states and 955 transitions. Second operand 13 states. [2020-10-12 19:33:37,442 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2020-10-12 19:33:37,912 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-12 19:33:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:40,612 INFO L93 Difference]: Finished difference Result 1080 states and 1457 transitions. [2020-10-12 19:33:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:33:40,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-12 19:33:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:40,616 INFO L225 Difference]: With dead ends: 1080 [2020-10-12 19:33:40,616 INFO L226 Difference]: Without dead ends: 855 [2020-10-12 19:33:40,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:33:40,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-10-12 19:33:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 688. [2020-10-12 19:33:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-12 19:33:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 925 transitions. [2020-10-12 19:33:40,718 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 925 transitions. Word has length 66 [2020-10-12 19:33:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:40,719 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 925 transitions. [2020-10-12 19:33:40,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:33:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 925 transitions. [2020-10-12 19:33:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:33:40,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:40,721 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] [2020-10-12 19:33:40,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:33:40,721 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1987095071, now seen corresponding path program 1 times [2020-10-12 19:33:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:40,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937095067] [2020-10-12 19:33:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:43,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:45,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:33:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:33:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:46,330 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-12 19:33:47,252 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:33:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:33:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:47,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:33:47,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:33:47,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:33:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:33:47,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:33:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:33:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:33:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:33:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:33:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:33:47,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937095067] [2020-10-12 19:33:47,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:33:47,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:33:47,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748827259] [2020-10-12 19:33:47,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:33:47,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:33:47,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:33:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:33:47,335 INFO L87 Difference]: Start difference. First operand 688 states and 925 transitions. Second operand 14 states. [2020-10-12 19:33:47,508 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-12 19:33:49,196 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 354 DAG size of output: 354 [2020-10-12 19:33:49,431 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-12 19:33:49,608 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 19:33:49,820 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-12 19:33:49,988 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-12 19:33:50,217 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-12 19:33:50,453 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 19:33:50,655 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-12 19:33:51,174 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-12 19:33:51,383 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-12 19:33:51,646 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 19:33:51,978 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-12 19:33:52,827 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-12 19:33:53,287 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 19:33:54,154 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-12 19:33:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:33:54,929 INFO L93 Difference]: Finished difference Result 1159 states and 1500 transitions. [2020-10-12 19:33:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:33:54,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-12 19:33:54,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:33:54,934 INFO L225 Difference]: With dead ends: 1159 [2020-10-12 19:33:54,934 INFO L226 Difference]: Without dead ends: 1140 [2020-10-12 19:33:54,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:33:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-10-12 19:33:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 690. [2020-10-12 19:33:55,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-12 19:33:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 927 transitions. [2020-10-12 19:33:55,089 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 927 transitions. Word has length 66 [2020-10-12 19:33:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:33:55,089 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 927 transitions. [2020-10-12 19:33:55,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:33:55,089 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 927 transitions. [2020-10-12 19:33:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 19:33:55,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:33:55,090 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] [2020-10-12 19:33:55,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:33:55,091 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_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]=== [2020-10-12 19:33:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:33:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash -862497985, now seen corresponding path program 1 times [2020-10-12 19:33:55,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:33:55,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566421511] [2020-10-12 19:33:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:33:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:33:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:33:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:00,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:34:00,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:01,250 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:34:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:01,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566421511] [2020-10-12 19:34:01,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:01,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:34:01,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223063059] [2020-10-12 19:34:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:34:01,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:34:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:34:01,331 INFO L87 Difference]: Start difference. First operand 690 states and 927 transitions. Second operand 16 states. [2020-10-12 19:34:01,514 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 19:34:03,251 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 363 DAG size of output: 355 [2020-10-12 19:34:03,966 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-12 19:34:04,172 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 19:34:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:09,171 INFO L93 Difference]: Finished difference Result 1661 states and 2316 transitions. [2020-10-12 19:34:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:34:09,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-12 19:34:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:09,176 INFO L225 Difference]: With dead ends: 1661 [2020-10-12 19:34:09,177 INFO L226 Difference]: Without dead ends: 1449 [2020-10-12 19:34:09,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:34:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2020-10-12 19:34:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 688. [2020-10-12 19:34:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-12 19:34:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 924 transitions. [2020-10-12 19:34:09,296 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 924 transitions. Word has length 67 [2020-10-12 19:34:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:09,297 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 924 transitions. [2020-10-12 19:34:09,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:34:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 924 transitions. [2020-10-12 19:34:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:09,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:09,298 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] [2020-10-12 19:34:09,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:34:09,299 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1638758212, now seen corresponding path program 1 times [2020-10-12 19:34:09,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:09,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599734050] [2020-10-12 19:34:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:09,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:09,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:09,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:09,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:14,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:34:14,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:15,413 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:15,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:15,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:15,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:15,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:34:15,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:15,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599734050] [2020-10-12 19:34:15,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:15,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:34:15,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020913330] [2020-10-12 19:34:15,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:15,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:15,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:15,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:15,481 INFO L87 Difference]: Start difference. First operand 688 states and 924 transitions. Second operand 12 states. [2020-10-12 19:34:16,336 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-12 19:34:16,611 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-12 19:34:16,776 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-12 19:34:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:19,561 INFO L93 Difference]: Finished difference Result 956 states and 1254 transitions. [2020-10-12 19:34:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:34:19,562 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 19:34:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:19,565 INFO L225 Difference]: With dead ends: 956 [2020-10-12 19:34:19,565 INFO L226 Difference]: Without dead ends: 942 [2020-10-12 19:34:19,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:34:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-10-12 19:34:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 679. [2020-10-12 19:34:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-12 19:34:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 913 transitions. [2020-10-12 19:34:19,731 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 913 transitions. Word has length 68 [2020-10-12 19:34:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:19,731 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 913 transitions. [2020-10-12 19:34:19,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 913 transitions. [2020-10-12 19:34:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:19,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:19,733 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] [2020-10-12 19:34:19,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:34:19,734 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash -603706778, now seen corresponding path program 1 times [2020-10-12 19:34:19,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:19,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737242508] [2020-10-12 19:34:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:21,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:24,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:24,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:34:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:34:24,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:34:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:34:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:26,156 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:26,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:26,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:26,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:34:26,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:26,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:26,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:26,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737242508] [2020-10-12 19:34:26,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:26,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:34:26,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326092067] [2020-10-12 19:34:26,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:34:26,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:26,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:34:26,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:34:26,225 INFO L87 Difference]: Start difference. First operand 679 states and 913 transitions. Second operand 13 states. [2020-10-12 19:34:27,118 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-12 19:34:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:30,421 INFO L93 Difference]: Finished difference Result 972 states and 1284 transitions. [2020-10-12 19:34:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:34:30,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 19:34:30,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:30,425 INFO L225 Difference]: With dead ends: 972 [2020-10-12 19:34:30,425 INFO L226 Difference]: Without dead ends: 961 [2020-10-12 19:34:30,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:34:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-12 19:34:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 683. [2020-10-12 19:34:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-10-12 19:34:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 917 transitions. [2020-10-12 19:34:30,533 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 917 transitions. Word has length 68 [2020-10-12 19:34:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:30,533 INFO L479 AbstractCegarLoop]: Abstraction has 683 states and 917 transitions. [2020-10-12 19:34:30,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:34:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 917 transitions. [2020-10-12 19:34:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:30,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:30,535 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] [2020-10-12 19:34:30,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:34:30,535 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash 872740413, now seen corresponding path program 1 times [2020-10-12 19:34:30,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:30,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100619215] [2020-10-12 19:34:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:34:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:36,479 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:36,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100619215] [2020-10-12 19:34:36,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:36,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:34:36,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004737778] [2020-10-12 19:34:36,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:36,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:36,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:36,545 INFO L87 Difference]: Start difference. First operand 683 states and 917 transitions. Second operand 12 states. [2020-10-12 19:34:38,303 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 329 DAG size of output: 327 [2020-10-12 19:34:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:42,160 INFO L93 Difference]: Finished difference Result 1629 states and 2260 transitions. [2020-10-12 19:34:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 19:34:42,161 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 19:34:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:42,167 INFO L225 Difference]: With dead ends: 1629 [2020-10-12 19:34:42,167 INFO L226 Difference]: Without dead ends: 1364 [2020-10-12 19:34:42,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-12 19:34:42,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-12 19:34:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 660. [2020-10-12 19:34:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-10-12 19:34:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 877 transitions. [2020-10-12 19:34:42,274 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 877 transitions. Word has length 68 [2020-10-12 19:34:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:42,275 INFO L479 AbstractCegarLoop]: Abstraction has 660 states and 877 transitions. [2020-10-12 19:34:42,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 877 transitions. [2020-10-12 19:34:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:42,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:42,276 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] [2020-10-12 19:34:42,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:34:42,277 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:42,277 INFO L82 PathProgramCache]: Analyzing trace with hash 438837691, now seen corresponding path program 1 times [2020-10-12 19:34:42,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:42,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956278111] [2020-10-12 19:34:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:45,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3236 [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:45,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:34:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:46,341 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:46,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:46,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956278111] [2020-10-12 19:34:46,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:46,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:34:46,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218841905] [2020-10-12 19:34:46,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:34:46,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:34:46,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:34:46,380 INFO L87 Difference]: Start difference. First operand 660 states and 877 transitions. Second operand 9 states. [2020-10-12 19:34:47,158 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-12 19:34:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:49,588 INFO L93 Difference]: Finished difference Result 1299 states and 1766 transitions. [2020-10-12 19:34:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 19:34:49,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-12 19:34:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:49,593 INFO L225 Difference]: With dead ends: 1299 [2020-10-12 19:34:49,593 INFO L226 Difference]: Without dead ends: 1284 [2020-10-12 19:34:49,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:34:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-10-12 19:34:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 652. [2020-10-12 19:34:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-10-12 19:34:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 867 transitions. [2020-10-12 19:34:49,702 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 867 transitions. Word has length 68 [2020-10-12 19:34:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:49,702 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 867 transitions. [2020-10-12 19:34:49,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:34:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 867 transitions. [2020-10-12 19:34:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:34:49,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:49,704 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] [2020-10-12 19:34:49,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:34:49,704 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_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]=== [2020-10-12 19:34:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 394938310, now seen corresponding path program 1 times [2020-10-12 19:34:49,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:49,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426612000] [2020-10-12 19:34:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:51,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:34:54,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:34:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:34:54,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:34:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:34:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:34:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:55,776 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:34:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:55,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:55,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:55,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:55,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 19:34:55,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:34:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:34:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:34:55,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426612000] [2020-10-12 19:34:55,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:55,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:34:55,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819328355] [2020-10-12 19:34:55,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:34:55,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:55,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:34:55,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:34:55,868 INFO L87 Difference]: Start difference. First operand 652 states and 867 transitions. Second operand 13 states. [2020-10-12 19:34:57,497 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 327 DAG size of output: 325 [2020-10-12 19:35:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:01,468 INFO L93 Difference]: Finished difference Result 1917 states and 2668 transitions. [2020-10-12 19:35:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:35:01,468 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 19:35:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:01,474 INFO L225 Difference]: With dead ends: 1917 [2020-10-12 19:35:01,474 INFO L226 Difference]: Without dead ends: 1577 [2020-10-12 19:35:01,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:35:01,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-10-12 19:35:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 855. [2020-10-12 19:35:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-10-12 19:35:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1194 transitions. [2020-10-12 19:35:01,674 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1194 transitions. Word has length 68 [2020-10-12 19:35:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:01,675 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1194 transitions. [2020-10-12 19:35:01,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:35:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1194 transitions. [2020-10-12 19:35:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:01,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:01,677 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] [2020-10-12 19:35:01,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:35:01,677 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_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]=== [2020-10-12 19:35:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash -89323551, now seen corresponding path program 1 times [2020-10-12 19:35:01,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:01,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937118129] [2020-10-12 19:35:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:06,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:06,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:06,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:35:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:35:06,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:35:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:35:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:07,633 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:07,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:07,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:35:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:35:07,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937118129] [2020-10-12 19:35:07,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:07,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:35:07,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919226682] [2020-10-12 19:35:07,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:35:07,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:07,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:35:07,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:35:07,675 INFO L87 Difference]: Start difference. First operand 855 states and 1194 transitions. Second operand 13 states. [2020-10-12 19:35:08,521 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2020-10-12 19:35:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:12,258 INFO L93 Difference]: Finished difference Result 2093 states and 2996 transitions. [2020-10-12 19:35:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:35:12,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-10-12 19:35:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:12,268 INFO L225 Difference]: With dead ends: 2093 [2020-10-12 19:35:12,268 INFO L226 Difference]: Without dead ends: 1645 [2020-10-12 19:35:12,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:35:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-10-12 19:35:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 867. [2020-10-12 19:35:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-12 19:35:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1206 transitions. [2020-10-12 19:35:12,526 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1206 transitions. Word has length 68 [2020-10-12 19:35:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:12,526 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1206 transitions. [2020-10-12 19:35:12,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:35:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1206 transitions. [2020-10-12 19:35:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:12,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:12,528 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] [2020-10-12 19:35:12,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:35:12,528 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_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]=== [2020-10-12 19:35:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1628195841, now seen corresponding path program 1 times [2020-10-12 19:35:12,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:12,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645840636] [2020-10-12 19:35:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:12,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:35:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:35:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:35:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:18,411 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:18,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:35:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:35:18,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645840636] [2020-10-12 19:35:18,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:18,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:35:18,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859208024] [2020-10-12 19:35:18,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:35:18,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:18,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:35:18,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:35:18,468 INFO L87 Difference]: Start difference. First operand 867 states and 1206 transitions. Second operand 14 states. [2020-10-12 19:35:19,375 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-12 19:35:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:23,869 INFO L93 Difference]: Finished difference Result 1826 states and 2599 transitions. [2020-10-12 19:35:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:35:23,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-12 19:35:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:23,875 INFO L225 Difference]: With dead ends: 1826 [2020-10-12 19:35:23,876 INFO L226 Difference]: Without dead ends: 1818 [2020-10-12 19:35:23,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:35:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-10-12 19:35:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 867. [2020-10-12 19:35:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-12 19:35:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1201 transitions. [2020-10-12 19:35:24,063 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1201 transitions. Word has length 68 [2020-10-12 19:35:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:24,063 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1201 transitions. [2020-10-12 19:35:24,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:35:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1201 transitions. [2020-10-12 19:35:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:24,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:24,065 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] [2020-10-12 19:35:24,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:35:24,065 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_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]=== [2020-10-12 19:35:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash -805224888, now seen corresponding path program 1 times [2020-10-12 19:35:24,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:24,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487169318] [2020-10-12 19:35:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:29,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:29,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:29,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:35:29,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:35:29,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:29,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:35:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:35:29,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:35:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:30,131 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:35:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:30,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:30,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:35:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:35:30,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487169318] [2020-10-12 19:35:30,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:30,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:35:30,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477423645] [2020-10-12 19:35:30,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:35:30,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:30,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:35:30,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:35:30,193 INFO L87 Difference]: Start difference. First operand 867 states and 1201 transitions. Second operand 17 states. [2020-10-12 19:35:32,104 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 338 DAG size of output: 334