/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:32:25,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:32:25,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:32:25,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:32:25,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:32:25,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:32:25,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:32:25,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:32:25,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:32:25,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:32:25,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:32:25,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:32:25,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:32:25,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:32:25,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:32:25,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:32:25,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:32:25,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:32:25,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:32:25,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:32:25,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:32:25,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:32:25,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:32:25,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:32:25,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:32:25,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:32:25,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:32:25,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:32:25,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:32:25,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:32:25,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:32:25,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:32:25,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:32:25,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:32:25,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:32:25,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:32:25,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:32:25,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:32:25,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:32:25,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:32:25,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:32:25,407 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 [2020-10-29 13:32:25,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:32:25,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:32:25,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:32:25,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:32:25,435 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:32:25,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:32:25,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:32:25,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:32:25,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:32:25,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:32:25,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:32:25,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:32:25,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:32:25,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:32:25,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:32:25,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:32:25,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:32:25,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:32:25,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:32:25,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:32:25,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:32:25,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:32:25,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:32:25,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:32:25,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:32:25,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:32:25,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:32:25,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:32:25,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:32:25,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:32:25,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:32:25,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:32:25,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:32:25,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:32:25,827 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:32:25,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-29 13:32:25,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3cdce069/320934c5d24b43debb68c2608973f1fd/FLAG808958ca1 [2020-10-29 13:32:27,212 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:32:27,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-29 13:32:27,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3cdce069/320934c5d24b43debb68c2608973f1fd/FLAG808958ca1 [2020-10-29 13:32:27,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3cdce069/320934c5d24b43debb68c2608973f1fd [2020-10-29 13:32:27,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:32:27,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:32:27,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:32:27,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:32:27,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:32:27,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:32:27" (1/1) ... [2020-10-29 13:32:27,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d52ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:27, skipping insertion in model container [2020-10-29 13:32:27,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:32:27" (1/1) ... [2020-10-29 13:32:27,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:32:27,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:32:30,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:32:30,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:32:32,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:32:32,799 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:32:32,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32 WrapperNode [2020-10-29 13:32:32,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:32:32,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:32:32,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:32:32,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:32:32,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:32,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:32,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:32,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:33,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:33,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:33,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (1/1) ... [2020-10-29 13:32:33,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:32:33,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:32:33,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:32:33,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:32:33,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (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 [2020-10-29 13:32:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:32:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:32:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:32:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:32:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:32:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:32:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:32:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:32:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:32:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:32:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:32:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:32:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:32:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:32:33,568 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:32:33,568 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:32:33,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:32:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:32:33,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:32:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:32:33,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:32:47,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:32:47,192 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:32:47,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:32:47 BoogieIcfgContainer [2020-10-29 13:32:47,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:32:47,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:32:47,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:32:47,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:32:47,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:32:27" (1/3) ... [2020-10-29 13:32:47,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6080eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:32:47, skipping insertion in model container [2020-10-29 13:32:47,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:32:32" (2/3) ... [2020-10-29 13:32:47,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6080eaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:32:47, skipping insertion in model container [2020-10-29 13:32:47,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:32:47" (3/3) ... [2020-10-29 13:32:47,212 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-29 13:32:47,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:32:47,231 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:32:47,245 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:32:47,290 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:32:47,290 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:32:47,290 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:32:47,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:32:47,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:32:47,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:32:47,291 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:32:47,291 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:32:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states. [2020-10-29 13:32:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:32:47,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:47,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:32:47,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:47,440 INFO L82 PathProgramCache]: Analyzing trace with hash -338627366, now seen corresponding path program 1 times [2020-10-29 13:32:47,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:47,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915595807] [2020-10-29 13:32:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:53,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:53,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:32:53,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:32:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:32:53,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:53,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:32:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:32:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:32:57,223 WARN L193 SmtUtils]: Spent 3.70 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-29 13:32:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:57,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:57,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:57,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:57,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 13:32:57,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:57,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:32:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:32:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:32:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:57,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915595807] [2020-10-29 13:32:57,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:57,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:32:57,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181547451] [2020-10-29 13:32:57,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:57,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:57,567 INFO L87 Difference]: Start difference. First operand 5032 states. Second operand 6 states. [2020-10-29 13:33:01,430 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification that was a NOOP. DAG size: 784 [2020-10-29 13:33:47,117 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification that was a NOOP. DAG size: 782 [2020-10-29 13:33:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:33:48,653 INFO L93 Difference]: Finished difference Result 7265 states and 12911 transitions. [2020-10-29 13:33:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:33:48,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:33:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:33:48,698 INFO L225 Difference]: With dead ends: 7265 [2020-10-29 13:33:48,699 INFO L226 Difference]: Without dead ends: 4743 [2020-10-29 13:33:48,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:33:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2020-10-29 13:33:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4559. [2020-10-29 13:33:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4559 states. [2020-10-29 13:33:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 6170 transitions. [2020-10-29 13:33:49,035 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 6170 transitions. Word has length 106 [2020-10-29 13:33:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:33:49,037 INFO L481 AbstractCegarLoop]: Abstraction has 4559 states and 6170 transitions. [2020-10-29 13:33:49,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:33:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 6170 transitions. [2020-10-29 13:33:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:33:49,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:33:49,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:33:49,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:33:49,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:33:49,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:33:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1813272010, now seen corresponding path program 1 times [2020-10-29 13:33:49,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:33:49,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453470033] [2020-10-29 13:33:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:33:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:49,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:54,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:54,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:33:54,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:33:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:33:54,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:54,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:33:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:33:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:33:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:33:58,056 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-29 13:33:58,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:33:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:33:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:33:58,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:33:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:33:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:33:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 13:33:58,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:33:58,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:33:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:33:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:33:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:33:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:33:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:33:58,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453470033] [2020-10-29 13:33:58,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:33:58,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:33:58,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143413091] [2020-10-29 13:33:58,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:33:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:33:58,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:33:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:33:58,285 INFO L87 Difference]: Start difference. First operand 4559 states and 6170 transitions. Second operand 6 states. [2020-10-29 13:34:02,173 WARN L193 SmtUtils]: Spent 3.71 s on a formula simplification that was a NOOP. DAG size: 784 [2020-10-29 13:34:31,609 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification that was a NOOP. DAG size: 782 [2020-10-29 13:34:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:34:33,145 INFO L93 Difference]: Finished difference Result 7672 states and 10517 transitions. [2020-10-29 13:34:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:34:33,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:34:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:34:33,173 INFO L225 Difference]: With dead ends: 7672 [2020-10-29 13:34:33,173 INFO L226 Difference]: Without dead ends: 5808 [2020-10-29 13:34:33,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:34:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2020-10-29 13:34:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5708. [2020-10-29 13:34:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5708 states. [2020-10-29 13:34:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 7935 transitions. [2020-10-29 13:34:33,428 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 7935 transitions. Word has length 106 [2020-10-29 13:34:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:34:33,431 INFO L481 AbstractCegarLoop]: Abstraction has 5708 states and 7935 transitions. [2020-10-29 13:34:33,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:34:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 7935 transitions. [2020-10-29 13:34:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:34:33,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:34:33,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:34:33,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:34:33,453 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:34:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:34:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash 237246224, now seen corresponding path program 1 times [2020-10-29 13:34:33,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:34:33,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084016809] [2020-10-29 13:34:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:34:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:38,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:38,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:34:38,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:34:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:34:38,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:38,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:34:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:34:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:34:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:34:42,461 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-29 13:34:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:34:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:34:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:34:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:34:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:34:42,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:34:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 13:34:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:34:42,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:34:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:34:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:34:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:34:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:34:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:34:42,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084016809] [2020-10-29 13:34:42,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:34:42,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:34:42,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210654576] [2020-10-29 13:34:42,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:34:42,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:34:42,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:34:42,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:34:42,681 INFO L87 Difference]: Start difference. First operand 5708 states and 7935 transitions. Second operand 6 states. [2020-10-29 13:34:46,465 WARN L193 SmtUtils]: Spent 3.62 s on a formula simplification that was a NOOP. DAG size: 784 [2020-10-29 13:35:14,061 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification that was a NOOP. DAG size: 782 [2020-10-29 13:35:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:35:15,283 INFO L93 Difference]: Finished difference Result 10479 states and 14708 transitions. [2020-10-29 13:35:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:35:15,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:35:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:35:15,320 INFO L225 Difference]: With dead ends: 10479 [2020-10-29 13:35:15,320 INFO L226 Difference]: Without dead ends: 8232 [2020-10-29 13:35:15,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:35:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8232 states. [2020-10-29 13:35:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8232 to 8048. [2020-10-29 13:35:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8048 states. [2020-10-29 13:35:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8048 states to 8048 states and 11383 transitions. [2020-10-29 13:35:15,634 INFO L78 Accepts]: Start accepts. Automaton has 8048 states and 11383 transitions. Word has length 106 [2020-10-29 13:35:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:35:15,636 INFO L481 AbstractCegarLoop]: Abstraction has 8048 states and 11383 transitions. [2020-10-29 13:35:15,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:35:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8048 states and 11383 transitions. [2020-10-29 13:35:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:35:15,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:35:15,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:35:15,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:35:15,657 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:35:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:35:15,658 INFO L82 PathProgramCache]: Analyzing trace with hash 954728136, now seen corresponding path program 1 times [2020-10-29 13:35:15,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:35:15,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010607702] [2020-10-29 13:35:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:35:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:19,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:20,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:20,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:35:20,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:35:20,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:35:20,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:20,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:35:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:35:20,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:35:20,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:24,733 WARN L193 SmtUtils]: Spent 3.69 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-29 13:35:24,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:35:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:35:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:35:24,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:35:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 13:35:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:35:24,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:35:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:35:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:35:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:35:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:35:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:35:24,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010607702] [2020-10-29 13:35:24,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:35:24,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:35:24,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035364438] [2020-10-29 13:35:24,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:35:24,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:35:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:35:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:35:24,939 INFO L87 Difference]: Start difference. First operand 8048 states and 11383 transitions. Second operand 6 states. [2020-10-29 13:35:28,666 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification that was a NOOP. DAG size: 783 [2020-10-29 13:35:54,952 WARN L193 SmtUtils]: Spent 3.52 s on a formula simplification that was a NOOP. DAG size: 781 [2020-10-29 13:35:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:35:56,126 INFO L93 Difference]: Finished difference Result 12344 states and 17435 transitions. [2020-10-29 13:35:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:35:56,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-29 13:35:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:35:56,163 INFO L225 Difference]: With dead ends: 12344 [2020-10-29 13:35:56,164 INFO L226 Difference]: Without dead ends: 9189 [2020-10-29 13:35:56,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:35:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9189 states. [2020-10-29 13:35:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9189 to 9109. [2020-10-29 13:35:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9109 states. [2020-10-29 13:35:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9109 states to 9109 states and 12838 transitions. [2020-10-29 13:35:56,564 INFO L78 Accepts]: Start accepts. Automaton has 9109 states and 12838 transitions. Word has length 107 [2020-10-29 13:35:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:35:56,564 INFO L481 AbstractCegarLoop]: Abstraction has 9109 states and 12838 transitions. [2020-10-29 13:35:56,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:35:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9109 states and 12838 transitions. [2020-10-29 13:35:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:35:56,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:35:56,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:35:56,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:35:56,584 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:35:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:35:56,585 INFO L82 PathProgramCache]: Analyzing trace with hash 590072029, now seen corresponding path program 1 times [2020-10-29 13:35:56,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:35:56,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043476360] [2020-10-29 13:35:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:35:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:35:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:35:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:36:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:36:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:36:01,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:36:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:36:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:36:01,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:36:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:36:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:36:01,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 13:36:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:36:05,610 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification that was a NOOP. DAG size: 775 [2020-10-29 13:36:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:36:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:36:05,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking...