/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=NARROWEST --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-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:39:33,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:39:33,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:39:33,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:39:33,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:39:33,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:39:33,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:39:33,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:39:33,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:39:33,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:39:33,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:39:33,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:39:33,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:39:33,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:39:33,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:39:33,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:39:33,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:39:33,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:39:33,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:39:33,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:39:33,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:39:33,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:39:33,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:39:33,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:39:33,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:39:33,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:39:33,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:39:33,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:39:33,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:39:33,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:39:33,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:39:33,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:39:33,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:39:33,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:39:33,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:39:33,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:39:33,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:39:33,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:39:33,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:39:33,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:39:33,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:39:33,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:39:33,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:39:33,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:39:33,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:39:33,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:39:33,133 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:39:33,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:39:33,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:39:33,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:39:33,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:39:33,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:39:33,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:39:33,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:39:33,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:39:33,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:39:33,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:39:33,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:39:33,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:39:33,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:39:33,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:39:33,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:39:33,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:39:33,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:39:33,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:39:33,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:39:33,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:39:33,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:39:33,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:39:33,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:39:33,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:39:33,137 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:39:33,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:39:33,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:39:33,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:39:33,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:39:33,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:39:33,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:39:33,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc32177e/00241be616174d88af18861700c819cb/FLAGc307fc7c4 [2020-10-13 14:39:34,405 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:39:34,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:39:34,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc32177e/00241be616174d88af18861700c819cb/FLAGc307fc7c4 [2020-10-13 14:39:34,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fc32177e/00241be616174d88af18861700c819cb [2020-10-13 14:39:34,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:39:34,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:39:34,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:39:34,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:39:34,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:39:34,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:39:34" (1/1) ... [2020-10-13 14:39:34,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a250be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:34, skipping insertion in model container [2020-10-13 14:39:34,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:39:34" (1/1) ... [2020-10-13 14:39:34,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:39:35,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:39:37,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:39:37,420 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:39:38,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:39:38,431 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:39:38,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38 WrapperNode [2020-10-13 14:39:38,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:39:38,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:39:38,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:39:38,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:39:38,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... [2020-10-13 14:39:38,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:39:38,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:39:38,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:39:38,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:39:38,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:39:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:39:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:39:39,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:39:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:39:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:39:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:39:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:39:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:39:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:39:39,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:39:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:39:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:39:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:39:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:39:39,060 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:39:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:39:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:39:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:39:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:39:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:39:39,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:39:47,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:39:47,153 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:39:47,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:39:47 BoogieIcfgContainer [2020-10-13 14:39:47,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:39:47,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:39:47,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:39:47,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:39:47,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:39:34" (1/3) ... [2020-10-13 14:39:47,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beca922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:39:47, skipping insertion in model container [2020-10-13 14:39:47,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:39:38" (2/3) ... [2020-10-13 14:39:47,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beca922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:39:47, skipping insertion in model container [2020-10-13 14:39:47,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:39:47" (3/3) ... [2020-10-13 14:39:47,191 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:39:47,201 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:39:47,212 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-13 14:39:47,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-13 14:39:47,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:39:47,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:39:47,309 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:39:47,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:39:47,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:39:47,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:39:47,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:39:47,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:39:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states. [2020-10-13 14:39:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:39:47,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:39:47,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:39:47,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:39:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:39:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash 634537729, now seen corresponding path program 1 times [2020-10-13 14:39:47,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:39:47,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565315103] [2020-10-13 14:39:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:39:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:39:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:39:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:39:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:39:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:39:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:39:53,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:39:53,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:39:53,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:39:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-13 14:39:53,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:39:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:39:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:39:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:39:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 14:40:01,392 WARN L193 SmtUtils]: Spent 7.55 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:40:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:40:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:40:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:01,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:40:01,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:40:01,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:40:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 14:40:01,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:40:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:40:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:40:01,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:40:01,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:40:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:40:01,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565315103] [2020-10-13 14:40:01,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:40:01,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:40:01,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427856259] [2020-10-13 14:40:01,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:40:01,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:40:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:40:01,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:40:01,758 INFO L87 Difference]: Start difference. First operand 3737 states. Second operand 6 states. [2020-10-13 14:40:09,107 WARN L193 SmtUtils]: Spent 7.10 s on a formula simplification that was a NOOP. DAG size: 1384 [2020-10-13 14:41:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:41:06,869 INFO L93 Difference]: Finished difference Result 6968 states and 12092 transitions. [2020-10-13 14:41:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:41:06,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-13 14:41:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:41:06,918 INFO L225 Difference]: With dead ends: 6968 [2020-10-13 14:41:06,919 INFO L226 Difference]: Without dead ends: 4443 [2020-10-13 14:41:06,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:41:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2020-10-13 14:41:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4418. [2020-10-13 14:41:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4418 states. [2020-10-13 14:41:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 5716 transitions. [2020-10-13 14:41:07,175 INFO L78 Accepts]: Start accepts. Automaton has 4418 states and 5716 transitions. Word has length 69 [2020-10-13 14:41:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:41:07,176 INFO L479 AbstractCegarLoop]: Abstraction has 4418 states and 5716 transitions. [2020-10-13 14:41:07,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:41:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4418 states and 5716 transitions. [2020-10-13 14:41:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:41:07,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:41:07,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:41:07,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:41:07,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:41:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:41:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1928533741, now seen corresponding path program 1 times [2020-10-13 14:41:07,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:41:07,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778849227] [2020-10-13 14:41:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:41:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:12,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:12,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:41:12,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:41:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-13 14:41:12,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:41:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:41:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:41:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:41:19,896 WARN L193 SmtUtils]: Spent 7.11 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:41:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:41:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:20,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:20,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:41:20,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:41:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 14:41:20,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:41:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:41:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:41:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:41:20,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778849227] [2020-10-13 14:41:20,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:41:20,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:41:20,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56745042] [2020-10-13 14:41:20,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:41:20,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:41:20,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:41:20,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:41:20,216 INFO L87 Difference]: Start difference. First operand 4418 states and 5716 transitions. Second operand 6 states. [2020-10-13 14:41:27,546 WARN L193 SmtUtils]: Spent 7.10 s on a formula simplification that was a NOOP. DAG size: 1384 [2020-10-13 14:42:02,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:42:02,453 INFO L93 Difference]: Finished difference Result 8167 states and 10548 transitions. [2020-10-13 14:42:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:42:02,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-13 14:42:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:42:02,478 INFO L225 Difference]: With dead ends: 8167 [2020-10-13 14:42:02,478 INFO L226 Difference]: Without dead ends: 5047 [2020-10-13 14:42:02,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:42:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2020-10-13 14:42:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 5027. [2020-10-13 14:42:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5027 states. [2020-10-13 14:42:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 6524 transitions. [2020-10-13 14:42:02,685 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 6524 transitions. Word has length 70 [2020-10-13 14:42:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:42:02,686 INFO L479 AbstractCegarLoop]: Abstraction has 5027 states and 6524 transitions. [2020-10-13 14:42:02,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:42:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 6524 transitions. [2020-10-13 14:42:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:42:02,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:42:02,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:42:02,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:42:02,701 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:42:02,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:42:02,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2066443107, now seen corresponding path program 1 times [2020-10-13 14:42:02,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:42:02,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953899778] [2020-10-13 14:42:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:42:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:03,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:07,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:42:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:42:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-13 14:42:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:42:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:42:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:42:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:15,465 WARN L193 SmtUtils]: Spent 7.28 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:42:15,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:42:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:42:15,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:42:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 14:42:15,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:42:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:42:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:42:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:42:15,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953899778] [2020-10-13 14:42:15,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:42:15,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:42:15,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732002260] [2020-10-13 14:42:15,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:42:15,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:42:15,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:42:15,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:42:15,638 INFO L87 Difference]: Start difference. First operand 5027 states and 6524 transitions. Second operand 6 states. [2020-10-13 14:42:22,775 WARN L193 SmtUtils]: Spent 6.97 s on a formula simplification that was a NOOP. DAG size: 1376 [2020-10-13 14:42:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:42:54,382 INFO L93 Difference]: Finished difference Result 10833 states and 14483 transitions. [2020-10-13 14:42:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:42:54,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-13 14:42:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:42:54,422 INFO L225 Difference]: With dead ends: 10833 [2020-10-13 14:42:54,422 INFO L226 Difference]: Without dead ends: 8511 [2020-10-13 14:42:54,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:42:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8511 states. [2020-10-13 14:42:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8511 to 7066. [2020-10-13 14:42:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7066 states. [2020-10-13 14:42:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7066 states to 7066 states and 9285 transitions. [2020-10-13 14:42:54,724 INFO L78 Accepts]: Start accepts. Automaton has 7066 states and 9285 transitions. Word has length 70 [2020-10-13 14:42:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:42:54,726 INFO L479 AbstractCegarLoop]: Abstraction has 7066 states and 9285 transitions. [2020-10-13 14:42:54,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:42:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7066 states and 9285 transitions. [2020-10-13 14:42:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:42:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:42:54,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:42:54,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:42:54,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:42:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:42:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1468448793, now seen corresponding path program 1 times [2020-10-13 14:42:54,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:42:54,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711013903] [2020-10-13 14:42:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:42:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:57,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:59,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:59,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:42:59,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:42:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:42:59,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:42:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:42:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:42:59,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:43:07,179 WARN L193 SmtUtils]: Spent 6.96 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:43:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:43:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:43:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:07,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:43:07,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:43:07,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:43:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 14:43:07,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:43:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:43:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:43:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:43:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:43:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:43:07,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711013903] [2020-10-13 14:43:07,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:43:07,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:43:07,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805991840] [2020-10-13 14:43:07,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:43:07,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:43:07,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:43:07,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:43:07,310 INFO L87 Difference]: Start difference. First operand 7066 states and 9285 transitions. Second operand 7 states. [2020-10-13 14:43:14,582 WARN L193 SmtUtils]: Spent 7.12 s on a formula simplification that was a NOOP. DAG size: 1379