/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.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:25:43,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:25:43,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:25:43,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:25:43,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:25:43,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:25:43,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:25:43,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:25:43,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:25:43,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:25:43,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:25:43,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:25:43,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:25:43,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:25:43,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:25:43,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:25:43,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:25:43,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:25:43,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:25:43,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:25:43,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:25:43,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:25:43,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:25:43,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:25:43,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:25:43,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:25:43,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:25:43,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:25:43,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:25:43,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:25:43,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:25:43,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:25:43,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:25:43,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:25:43,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:25:43,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:25:43,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:25:43,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:25:43,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:25:43,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:25:43,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:25:43,387 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 13:25:43,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:25:43,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:25:43,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:25:43,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:25:43,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:25:43,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:25:43,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:25:43,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:25:43,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:25:43,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:25:43,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:25:43,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:25:43,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:25:43,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:25:43,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:25:43,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:25:43,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:25:43,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:25:43,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:25:43,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:25:43,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:25:43,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:25:43,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:25:43,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:25:43,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:25:43,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:25:43,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:25:43,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:25:43,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:25:43,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:25:43,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:25:43,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:25:43,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:25:43,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:25:43,861 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:25:43,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2020-10-29 13:25:43,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dd3b1378/1a3070f23dfb47c495e7259d0ee6110c/FLAG72a9fd821 [2020-10-29 13:25:45,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:25:45,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2020-10-29 13:25:45,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dd3b1378/1a3070f23dfb47c495e7259d0ee6110c/FLAG72a9fd821 [2020-10-29 13:25:45,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dd3b1378/1a3070f23dfb47c495e7259d0ee6110c [2020-10-29 13:25:45,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:25:45,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:25:45,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:25:45,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:25:45,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:25:45,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:25:45" (1/1) ... [2020-10-29 13:25:45,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d36efc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:45, skipping insertion in model container [2020-10-29 13:25:45,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:25:45" (1/1) ... [2020-10-29 13:25:45,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:25:45,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:25:47,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:25:47,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:25:48,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:25:48,927 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:25:48,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48 WrapperNode [2020-10-29 13:25:48,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:25:48,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:25:48,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:25:48,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:25:48,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:48,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:49,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:49,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:49,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:49,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:49,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (1/1) ... [2020-10-29 13:25:49,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:25:49,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:25:49,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:25:49,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:25:49,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (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 13:25:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:25:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:25:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:25:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:25:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:25:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:25:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:25:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:25:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:25:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:25:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:25:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:25:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:25:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:25:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:25:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:25:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:25:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:25:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:25:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:25:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:25:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:25:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:25:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:26:01,199 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:26:01,200 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:26:01,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:26:01 BoogieIcfgContainer [2020-10-29 13:26:01,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:26:01,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:26:01,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:26:01,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:26:01,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:25:45" (1/3) ... [2020-10-29 13:26:01,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c75ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:26:01, skipping insertion in model container [2020-10-29 13:26:01,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:25:48" (2/3) ... [2020-10-29 13:26:01,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c75ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:26:01, skipping insertion in model container [2020-10-29 13:26:01,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:26:01" (3/3) ... [2020-10-29 13:26:01,219 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+sep-reducer.c [2020-10-29 13:26:01,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:26:01,238 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:26:01,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:26:01,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:26:01,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:26:01,289 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:26:01,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:26:01,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:26:01,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:26:01,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:26:01,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:26:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states. [2020-10-29 13:26:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:26:01,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:26:01,383 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] [2020-10-29 13:26:01,383 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:26:01,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:26:01,390 INFO L82 PathProgramCache]: Analyzing trace with hash -80909251, now seen corresponding path program 1 times [2020-10-29 13:26:01,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:26:01,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169010849] [2020-10-29 13:26:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:26:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:02,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:03,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:07,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:26:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:26:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 13:26:07,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:07,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:26:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:26:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:26:07,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:26:21,992 WARN L193 SmtUtils]: Spent 14.27 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-29 13:26:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:26:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:26:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:26:22,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:26:22,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:26:22,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:26:22,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 13:26:22,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:26:22,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:26:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:26:22,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:26:22,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:26:22,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:26:22,383 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 13:26:22,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169010849] [2020-10-29 13:26:22,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:26:22,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:26:22,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721181257] [2020-10-29 13:26:22,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:26:22,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:26:22,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:26:22,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:26:22,415 INFO L87 Difference]: Start difference. First operand 2550 states. Second operand 6 states. [2020-10-29 13:26:37,267 WARN L193 SmtUtils]: Spent 14.56 s on a formula simplification that was a NOOP. DAG size: 1092 [2020-10-29 13:27:26,169 WARN L193 SmtUtils]: Spent 14.69 s on a formula simplification that was a NOOP. DAG size: 1090 [2020-10-29 13:27:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:27,644 INFO L93 Difference]: Finished difference Result 3908 states and 6681 transitions. [2020-10-29 13:27:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:27:27,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 13:27:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:27,691 INFO L225 Difference]: With dead ends: 3908 [2020-10-29 13:27:27,692 INFO L226 Difference]: Without dead ends: 2624 [2020-10-29 13:27:27,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:27:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-10-29 13:27:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2538. [2020-10-29 13:27:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2538 states. [2020-10-29 13:27:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3342 transitions. [2020-10-29 13:27:27,918 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3342 transitions. Word has length 92 [2020-10-29 13:27:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:27,919 INFO L481 AbstractCegarLoop]: Abstraction has 2538 states and 3342 transitions. [2020-10-29 13:27:27,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3342 transitions. [2020-10-29 13:27:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:27:27,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:27,928 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] [2020-10-29 13:27:27,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:27:27,929 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:27,930 INFO L82 PathProgramCache]: Analyzing trace with hash -665978351, now seen corresponding path program 1 times [2020-10-29 13:27:27,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:27,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127905250] [2020-10-29 13:27:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:31,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:27:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:27:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:27:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:33,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:27:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:27:47,881 WARN L193 SmtUtils]: Spent 14.49 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-29 13:27:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:48,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:48,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 13:27:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:48,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:27:48,230 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 13:27:48,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127905250] [2020-10-29 13:27:48,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:48,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:27:48,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96183108] [2020-10-29 13:27:48,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:48,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:48,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:48,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:48,234 INFO L87 Difference]: Start difference. First operand 2538 states and 3342 transitions. Second operand 6 states. [2020-10-29 13:28:03,773 WARN L193 SmtUtils]: Spent 15.29 s on a formula simplification that was a NOOP. DAG size: 1093 [2020-10-29 13:28:42,411 WARN L193 SmtUtils]: Spent 15.29 s on a formula simplification that was a NOOP. DAG size: 1091 [2020-10-29 13:28:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:44,197 INFO L93 Difference]: Finished difference Result 4434 states and 5924 transitions. [2020-10-29 13:28:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:28:44,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 13:28:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:44,217 INFO L225 Difference]: With dead ends: 4434 [2020-10-29 13:28:44,217 INFO L226 Difference]: Without dead ends: 3409 [2020-10-29 13:28:44,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2020-10-29 13:28:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3245. [2020-10-29 13:28:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3245 states. [2020-10-29 13:28:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4399 transitions. [2020-10-29 13:28:44,394 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4399 transitions. Word has length 92 [2020-10-29 13:28:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:44,396 INFO L481 AbstractCegarLoop]: Abstraction has 3245 states and 4399 transitions. [2020-10-29 13:28:44,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4399 transitions. [2020-10-29 13:28:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:28:44,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:44,405 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] [2020-10-29 13:28:44,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:28:44,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:44,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:44,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1800096333, now seen corresponding path program 1 times [2020-10-29 13:28:44,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:44,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265360848] [2020-10-29 13:28:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:28:49,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:28:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:28:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:49,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:28:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:29:04,548 WARN L193 SmtUtils]: Spent 14.68 s on a formula simplification that was a NOOP. DAG size: 1084 [2020-10-29 13:29:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 13:29:04,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:04,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:04,825 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 13:29:04,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265360848] [2020-10-29 13:29:04,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:04,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:04,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855898436] [2020-10-29 13:29:04,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:04,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:04,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:04,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:04,833 INFO L87 Difference]: Start difference. First operand 3245 states and 4399 transitions. Second operand 6 states. [2020-10-29 13:29:20,361 WARN L193 SmtUtils]: Spent 15.25 s on a formula simplification that was a NOOP. DAG size: 1093