/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:18:11,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:18:11,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:18:11,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:18:11,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:18:11,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:18:11,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:18:11,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:18:11,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:18:11,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:18:11,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:18:11,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:18:11,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:18:11,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:18:11,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:18:11,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:18:11,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:18:11,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:18:11,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:18:11,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:18:11,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:18:11,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:18:11,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:18:11,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:18:11,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:18:11,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:18:11,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:18:11,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:18:11,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:18:11,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:18:11,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:18:11,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:18:11,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:18:11,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:18:11,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:18:11,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:18:11,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:18:11,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:18:11,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:18:11,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:18:11,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:18:11,385 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 [2020-10-14 09:18:11,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:18:11,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:18:11,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:18:11,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:18:11,408 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:18:11,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:18:11,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:18:11,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:18:11,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:18:11,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:18:11,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:18:11,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:18:11,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:18:11,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:18:11,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:18:11,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:18:11,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:18:11,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:18:11,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:18:11,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:18:11,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:18:11,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:18:11,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:18:11,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:18:11,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:18:11,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:18:11,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:18:11,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:18:11,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:18:11,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:18:11,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:18:11,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:18:11,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:18:11,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:18:11,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:18:11,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:18:11,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/335b1e67b/b04903e5769b44769a8c0d6fbf235441/FLAG565da01e4 [2020-10-14 09:18:12,650 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:18:12,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:18:12,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/335b1e67b/b04903e5769b44769a8c0d6fbf235441/FLAG565da01e4 [2020-10-14 09:18:13,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/335b1e67b/b04903e5769b44769a8c0d6fbf235441 [2020-10-14 09:18:13,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:18:13,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:18:13,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:18:13,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:18:13,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:18:13,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:18:13" (1/1) ... [2020-10-14 09:18:13,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428b206b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:13, skipping insertion in model container [2020-10-14 09:18:13,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:18:13" (1/1) ... [2020-10-14 09:18:13,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:18:13,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:18:16,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:18:16,485 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:18:18,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:18:18,146 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:18:18,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18 WrapperNode [2020-10-14 09:18:18,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:18:18,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:18:18,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:18:18,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:18:18,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (1/1) ... [2020-10-14 09:18:18,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:18:18,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:18:18,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:18:18,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:18:18,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (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 [2020-10-14 09:18:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:18:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:18:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:18:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:18:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:18:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:18:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:18:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:18:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:18:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:18:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:18:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:18:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:18:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:18:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:18:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:18:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:18:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:18:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:18:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:18:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:18:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:18:31,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:18:31,650 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:18:31,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:18:31 BoogieIcfgContainer [2020-10-14 09:18:31,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:18:31,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:18:31,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:18:31,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:18:31,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:18:13" (1/3) ... [2020-10-14 09:18:31,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0eb82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:18:31, skipping insertion in model container [2020-10-14 09:18:31,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:18" (2/3) ... [2020-10-14 09:18:31,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0eb82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:18:31, skipping insertion in model container [2020-10-14 09:18:31,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:18:31" (3/3) ... [2020-10-14 09:18:31,691 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:18:31,698 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:18:31,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-10-14 09:18:31,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-10-14 09:18:31,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:18:31,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:18:31,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:18:31,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:18:31,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:18:31,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:18:31,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:18:31,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:18:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states. [2020-10-14 09:18:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 09:18:31,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:31,898 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] [2020-10-14 09:18:31,899 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1648974574, now seen corresponding path program 1 times [2020-10-14 09:18:31,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:31,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330878734] [2020-10-14 09:18:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 09:18:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:18:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:18:37,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:37,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:18:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:18:37,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:18:37,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:18:41,248 WARN L193 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-14 09:18:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:41,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:41,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:41,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:41,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 09:18:41,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:41,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:18:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:18:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:18:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:18:41,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330878734] [2020-10-14 09:18:41,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:41,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:18:41,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182460070] [2020-10-14 09:18:41,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:18:41,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:41,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:18:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:18:41,517 INFO L87 Difference]: Start difference. First operand 6188 states. Second operand 6 states. [2020-10-14 09:18:45,272 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification that was a NOOP. DAG size: 948 [2020-10-14 09:19:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:52,312 INFO L93 Difference]: Finished difference Result 9250 states and 16427 transitions. [2020-10-14 09:19:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:19:52,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-10-14 09:19:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:52,365 INFO L225 Difference]: With dead ends: 9250 [2020-10-14 09:19:52,365 INFO L226 Difference]: Without dead ends: 5838 [2020-10-14 09:19:52,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:19:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2020-10-14 09:19:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5808. [2020-10-14 09:19:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-10-14 09:19:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7708 transitions. [2020-10-14 09:19:52,678 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7708 transitions. Word has length 81 [2020-10-14 09:19:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:52,679 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 7708 transitions. [2020-10-14 09:19:52,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:19:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7708 transitions. [2020-10-14 09:19:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 09:19:52,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:52,694 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] [2020-10-14 09:19:52,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:19:52,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:52,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1770188140, now seen corresponding path program 1 times [2020-10-14 09:19:52,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:52,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988454180] [2020-10-14 09:19:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:57,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 09:19:57,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:19:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 09:19:57,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:57,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:19:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:19:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 09:19:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:01,591 WARN L193 SmtUtils]: Spent 3.41 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-14 09:20:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:20:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:20:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:20:01,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:20:01,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:20:01,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:20:01,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 09:20:01,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:20:01,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:20:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:20:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:20:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:20:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:20:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:20:01,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988454180] [2020-10-14 09:20:01,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:20:01,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:20:01,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308997554] [2020-10-14 09:20:01,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:20:01,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:20:01,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:20:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:20:01,913 INFO L87 Difference]: Start difference. First operand 5808 states and 7708 transitions. Second operand 10 states. [2020-10-14 09:20:05,723 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification that was a NOOP. DAG size: 952 [2020-10-14 09:21:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:03,148 INFO L93 Difference]: Finished difference Result 6143 states and 8204 transitions. [2020-10-14 09:21:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 09:21:03,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-14 09:21:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:03,191 INFO L225 Difference]: With dead ends: 6143 [2020-10-14 09:21:03,192 INFO L226 Difference]: Without dead ends: 6138 [2020-10-14 09:21:03,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2020-10-14 09:21:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2020-10-14 09:21:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 5808. [2020-10-14 09:21:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-10-14 09:21:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7707 transitions. [2020-10-14 09:21:03,483 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7707 transitions. Word has length 82 [2020-10-14 09:21:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:03,485 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 7707 transitions. [2020-10-14 09:21:03,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:21:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7707 transitions. [2020-10-14 09:21:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 09:21:03,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:03,500 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] [2020-10-14 09:21:03,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:21:03,500 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash 577466158, now seen corresponding path program 1 times [2020-10-14 09:21:03,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:03,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730694492] [2020-10-14 09:21:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 09:21:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:21:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 09:21:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:08,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:21:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:21:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:21:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:12,405 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-14 09:21:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:12,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:12,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 09:21:12,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:12,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:12,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:21:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:12,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730694492] [2020-10-14 09:21:12,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:12,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:21:12,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034506599] [2020-10-14 09:21:12,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:21:12,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:12,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:21:12,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:21:12,608 INFO L87 Difference]: Start difference. First operand 5808 states and 7707 transitions. Second operand 6 states. [2020-10-14 09:21:16,126 WARN L193 SmtUtils]: Spent 3.38 s on a formula simplification that was a NOOP. DAG size: 949 [2020-10-14 09:21:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:55,531 INFO L93 Difference]: Finished difference Result 9718 states and 12938 transitions. [2020-10-14 09:21:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:21:55,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-14 09:21:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:55,562 INFO L225 Difference]: With dead ends: 9718 [2020-10-14 09:21:55,563 INFO L226 Difference]: Without dead ends: 6170 [2020-10-14 09:21:55,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:21:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2020-10-14 09:21:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6141. [2020-10-14 09:21:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2020-10-14 09:21:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 8252 transitions. [2020-10-14 09:21:55,829 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 8252 transitions. Word has length 82 [2020-10-14 09:21:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:55,833 INFO L479 AbstractCegarLoop]: Abstraction has 6141 states and 8252 transitions. [2020-10-14 09:21:55,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:21:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 8252 transitions. [2020-10-14 09:21:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 09:21:55,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:55,853 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] [2020-10-14 09:21:55,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:21:55,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:55,857 INFO L82 PathProgramCache]: Analyzing trace with hash -825917601, now seen corresponding path program 1 times [2020-10-14 09:21:55,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:55,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520947400] [2020-10-14 09:21:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:59,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:00,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:00,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 09:22:00,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:22:00,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:00,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:00,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:22:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:22:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 09:22:00,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:04,829 WARN L193 SmtUtils]: Spent 3.67 s on a formula simplification that was a NOOP. DAG size: 940 [2020-10-14 09:22:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:04,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:04,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:04,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:04,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 09:22:04,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:04,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:04,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:22:04,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:04,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520947400] [2020-10-14 09:22:04,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:04,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:22:04,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380421768] [2020-10-14 09:22:04,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:22:05,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:22:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:05,000 INFO L87 Difference]: Start difference. First operand 6141 states and 8252 transitions. Second operand 6 states.