/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=DEEPEST --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-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:16:54,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:16:54,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:16:54,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:16:54,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:16:54,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:16:54,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:16:54,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:16:54,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:16:54,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:16:54,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:16:54,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:16:54,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:16:54,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:16:54,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:16:54,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:16:54,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:16:54,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:16:54,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:16:54,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:16:54,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:16:54,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:16:54,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:16:54,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:16:54,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:16:54,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:16:54,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:16:54,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:16:54,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:16:54,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:16:54,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:16:54,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:16:54,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:16:54,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:16:54,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:16:54,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:16:54,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:16:54,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:16:54,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:16:54,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:16:54,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:16:54,361 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 [2020-10-28 00:16:54,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:16:54,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:16:54,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:16:54,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:16:54,391 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:16:54,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:16:54,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:16:54,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:16:54,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:16:54,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:16:54,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:16:54,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:16:54,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:16:54,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:16:54,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:16:54,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:16:54,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:16:54,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:16:54,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:16:54,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:16:54,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:16:54,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:16:54,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:16:54,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:16:54,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:16:54,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:16:54,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:16:54,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:16:54,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:16:54,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:16:54,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:16:54,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:16:54,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:16:54,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:16:54,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:16:54,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:16:54,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc607cd2/c595db8b9d9e4aaa923eb6035247bedf/FLAGdd4e833cb [2020-10-28 00:16:56,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:16:56,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:16:56,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc607cd2/c595db8b9d9e4aaa923eb6035247bedf/FLAGdd4e833cb [2020-10-28 00:16:56,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfc607cd2/c595db8b9d9e4aaa923eb6035247bedf [2020-10-28 00:16:56,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:16:56,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:16:56,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:16:56,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:16:56,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:16:56,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:16:56" (1/1) ... [2020-10-28 00:16:56,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623b1fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:16:56, skipping insertion in model container [2020-10-28 00:16:56,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:16:56" (1/1) ... [2020-10-28 00:16:56,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:16:56,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:16:58,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:16:58,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:17:00,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:17:00,196 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:17:00,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00 WrapperNode [2020-10-28 00:17:00,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:17:00,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:17:00,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:17:00,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:17:00,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (1/1) ... [2020-10-28 00:17:00,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:17:00,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:17:00,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:17:00,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:17:00,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (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 [2020-10-28 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:17:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:17:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:17:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:17:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:17:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:17:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:17:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:17:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:17:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:17:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:17:00,772 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:17:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:17:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:17:00,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:17:10,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:17:10,607 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:17:10,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:10 BoogieIcfgContainer [2020-10-28 00:17:10,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:17:10,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:17:10,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:17:10,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:17:10,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:16:56" (1/3) ... [2020-10-28 00:17:10,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f471453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:10, skipping insertion in model container [2020-10-28 00:17:10,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:17:00" (2/3) ... [2020-10-28 00:17:10,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f471453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:17:10, skipping insertion in model container [2020-10-28 00:17:10,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:17:10" (3/3) ... [2020-10-28 00:17:10,622 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:17:10,636 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:17:10,645 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:17:10,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:17:10,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:17:10,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:17:10,701 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:17:10,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:17:10,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:17:10,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:17:10,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:17:10,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:17:10,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states. [2020-10-28 00:17:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 00:17:10,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:17:10,799 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] [2020-10-28 00:17:10,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:17:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:17:10,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1375217114, now seen corresponding path program 1 times [2020-10-28 00:17:10,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:17:10,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146881156] [2020-10-28 00:17:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:17:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:17:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:16,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:17:16,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 00:17:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:17:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 00:17:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:17:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:17:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:17:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 00:17:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:17:31,710 WARN L193 SmtUtils]: Spent 14.19 s on a formula simplification that was a NOOP. DAG size: 1516 [2020-10-28 00:17:31,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:17:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:17:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:17:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:17:31,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:17:31,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:17:31,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 00:17:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:17:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:17:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:17:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:17:32,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146881156] [2020-10-28 00:17:32,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:17:32,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:17:32,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682742946] [2020-10-28 00:17:32,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:17:32,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:17:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:17:32,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:17:32,032 INFO L87 Difference]: Start difference. First operand 2877 states. Second operand 7 states. [2020-10-28 00:17:45,403 WARN L193 SmtUtils]: Spent 13.05 s on a formula simplification that was a NOOP. DAG size: 1522 [2020-10-28 00:19:03,992 WARN L193 SmtUtils]: Spent 13.62 s on a formula simplification that was a NOOP. DAG size: 1524 [2020-10-28 00:19:19,147 WARN L193 SmtUtils]: Spent 13.25 s on a formula simplification that was a NOOP. DAG size: 1523 [2020-10-28 00:19:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:20,349 INFO L93 Difference]: Finished difference Result 4088 states and 7444 transitions. [2020-10-28 00:19:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 00:19:20,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-28 00:19:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:20,405 INFO L225 Difference]: With dead ends: 4088 [2020-10-28 00:19:20,406 INFO L226 Difference]: Without dead ends: 3725 [2020-10-28 00:19:20,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 54.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-28 00:19:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2020-10-28 00:19:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3020. [2020-10-28 00:19:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3020 states. [2020-10-28 00:19:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 3849 transitions. [2020-10-28 00:19:20,628 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 3849 transitions. Word has length 83 [2020-10-28 00:19:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:20,629 INFO L481 AbstractCegarLoop]: Abstraction has 3020 states and 3849 transitions. [2020-10-28 00:19:20,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:19:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 3849 transitions. [2020-10-28 00:19:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 00:19:20,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:20,640 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] [2020-10-28 00:19:20,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:19:20,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash 242510153, now seen corresponding path program 1 times [2020-10-28 00:19:20,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:20,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937210026] [2020-10-28 00:19:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:25,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 00:19:25,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:19:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-28 00:19:25,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:19:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:19:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:19:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:39,667 WARN L193 SmtUtils]: Spent 13.33 s on a formula simplification that was a NOOP. DAG size: 1516 [2020-10-28 00:19:39,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:39,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:39,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:39,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 00:19:39,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:39,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:39,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937210026] [2020-10-28 00:19:39,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:39,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:19:39,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178698873] [2020-10-28 00:19:39,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:19:39,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:19:39,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:19:39,927 INFO L87 Difference]: Start difference. First operand 3020 states and 3849 transitions. Second operand 7 states. [2020-10-28 00:19:53,832 WARN L193 SmtUtils]: Spent 13.66 s on a formula simplification that was a NOOP. DAG size: 1520 [2020-10-28 00:20:37,035 WARN L193 SmtUtils]: Spent 13.61 s on a formula simplification that was a NOOP. DAG size: 1522