/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.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:01:13,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:01:13,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:01:13,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:01:13,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:01:13,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:01:13,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:01:13,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:01:13,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:01:13,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:01:13,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:01:13,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:01:13,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:01:13,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:01:13,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:01:13,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:01:13,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:01:13,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:01:13,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:01:13,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:01:13,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:01:13,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:01:13,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:01:13,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:01:13,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:01:13,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:01:13,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:01:13,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:01:13,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:01:13,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:01:13,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:01:13,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:01:13,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:01:13,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:01:13,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:01:13,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:01:13,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:01:13,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:01:13,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:01:13,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:01:13,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:01:13,538 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 09:01:13,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:01:13,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:01:13,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:01:13,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:01:13,563 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:01:13,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:01:13,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:01:13,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:01:13,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:01:13,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:01:13,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:01:13,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:01:13,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:01:13,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:01:13,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:01:13,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:01:13,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:01:13,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:01:13,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:01:13,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:01:13,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:01:13,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:01:13,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:01:13,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:01:13,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:01:13,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:01:13,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:01:13,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:01:13,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:01:13,568 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 09:01:13,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:01:13,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:01:13,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:01:13,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:01:13,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:01:13,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:01:14,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ff546796/1401545167654df28a7c11ba2c1593bf/FLAG4d17d818f [2020-10-14 09:01:15,025 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:01:15,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:01:15,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ff546796/1401545167654df28a7c11ba2c1593bf/FLAG4d17d818f [2020-10-14 09:01:15,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ff546796/1401545167654df28a7c11ba2c1593bf [2020-10-14 09:01:15,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:01:15,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:01:15,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:01:15,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:01:15,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:01:15,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:15" (1/1) ... [2020-10-14 09:01:15,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d5d851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:15, skipping insertion in model container [2020-10-14 09:01:15,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:01:15" (1/1) ... [2020-10-14 09:01:15,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:01:15,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:01:19,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:01:19,774 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:01:22,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:01:22,342 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:01:22,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22 WrapperNode [2020-10-14 09:01:22,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:01:22,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:01:22,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:01:22,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:01:22,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (1/1) ... [2020-10-14 09:01:22,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:01:22,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:01:22,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:01:22,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:01:22,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (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 09:01:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:01:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:01:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:01:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:01:23,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:01:23,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:01:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:01:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:01:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:01:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:01:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:01:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:01:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:01:23,004 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:01:23,004 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:01:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:01:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:01:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:01:23,005 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:01:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 09:01:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-14 09:01:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:01:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:01:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:01:23,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:01:23,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:01:35,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:01:35,150 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:01:35,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:35 BoogieIcfgContainer [2020-10-14 09:01:35,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:01:35,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:01:35,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:01:35,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:01:35,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:01:15" (1/3) ... [2020-10-14 09:01:35,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10452889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:35, skipping insertion in model container [2020-10-14 09:01:35,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:01:22" (2/3) ... [2020-10-14 09:01:35,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10452889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:01:35, skipping insertion in model container [2020-10-14 09:01:35,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:01:35" (3/3) ... [2020-10-14 09:01:35,190 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-14 09:01:35,201 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:01:35,215 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2020-10-14 09:01:35,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2020-10-14 09:01:35,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:01:35,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:01:35,271 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:01:35,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:01:35,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:01:35,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:01:35,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:01:35,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:01:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states. [2020-10-14 09:01:35,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 09:01:35,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:01:35,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:01:35,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:01:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:01:35,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1922900108, now seen corresponding path program 1 times [2020-10-14 09:01:35,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:01:35,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337188763] [2020-10-14 09:01:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:01:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:38,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:41,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 09:01:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:01:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-14 09:01:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:41,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:01:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:01:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 09:01:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:01:48,860 WARN L193 SmtUtils]: Spent 7.18 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-14 09:01:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:01:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:01:48,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:01:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:01:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:01:49,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:01:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 09:01:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:01:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:01:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:01:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:01:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:01:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:01:49,271 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 09:01:49,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337188763] [2020-10-14 09:01:49,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:01:49,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:01:49,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140301477] [2020-10-14 09:01:49,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:01:49,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:01:49,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:01:49,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:01:49,301 INFO L87 Difference]: Start difference. First operand 3859 states. Second operand 6 states. [2020-10-14 09:02:03,986 WARN L193 SmtUtils]: Spent 14.45 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1245 [2020-10-14 09:03:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:01,409 INFO L93 Difference]: Finished difference Result 5613 states and 10102 transitions. [2020-10-14 09:03:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:01,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-14 09:03:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:01,457 INFO L225 Difference]: With dead ends: 5613 [2020-10-14 09:03:01,458 INFO L226 Difference]: Without dead ends: 3215 [2020-10-14 09:03:01,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:03:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2020-10-14 09:03:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3215. [2020-10-14 09:03:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2020-10-14 09:03:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 4121 transitions. [2020-10-14 09:03:01,649 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 4121 transitions. Word has length 120 [2020-10-14 09:03:01,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:01,650 INFO L479 AbstractCegarLoop]: Abstraction has 3215 states and 4121 transitions. [2020-10-14 09:03:01,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:01,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 4121 transitions. [2020-10-14 09:03:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 09:03:01,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:01,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:01,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:03:01,662 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:01,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:01,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1227536083, now seen corresponding path program 1 times [2020-10-14 09:03:01,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:01,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042944768] [2020-10-14 09:03:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 09:03:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:03:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:03:06,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:06,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 09:03:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:14,772 WARN L193 SmtUtils]: Spent 7.61 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-14 09:03:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:14,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 09:03:14,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:14,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:15,099 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 09:03:15,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042944768] [2020-10-14 09:03:15,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:15,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:03:15,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886245265] [2020-10-14 09:03:15,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:15,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:15,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:15,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:15,103 INFO L87 Difference]: Start difference. First operand 3215 states and 4121 transitions. Second operand 6 states. [2020-10-14 09:03:22,393 WARN L193 SmtUtils]: Spent 7.13 s on a formula simplification that was a NOOP. DAG size: 1243 [2020-10-14 09:03:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:57,136 INFO L93 Difference]: Finished difference Result 4957 states and 6642 transitions. [2020-10-14 09:03:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:57,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-14 09:03:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:57,151 INFO L225 Difference]: With dead ends: 4957 [2020-10-14 09:03:57,151 INFO L226 Difference]: Without dead ends: 2703 [2020-10-14 09:03:57,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:03:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2020-10-14 09:03:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2703. [2020-10-14 09:03:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2703 states. [2020-10-14 09:03:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 3544 transitions. [2020-10-14 09:03:57,245 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 3544 transitions. Word has length 121 [2020-10-14 09:03:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:57,245 INFO L479 AbstractCegarLoop]: Abstraction has 2703 states and 3544 transitions. [2020-10-14 09:03:57,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 3544 transitions. [2020-10-14 09:03:57,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:03:57,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:57,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:57,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:03:57,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:57,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:57,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1683624438, now seen corresponding path program 1 times [2020-10-14 09:03:57,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:57,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889706777] [2020-10-14 09:03:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:00,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:02,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:02,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:04:02,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:04:02,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 09:04:02,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:02,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:02,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:02,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 09:04:02,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:10,059 WARN L193 SmtUtils]: Spent 7.36 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-14 09:04:10,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:10,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:10,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:10,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 09:04:10,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:10,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:10,384 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 09:04:10,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889706777] [2020-10-14 09:04:10,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:10,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:04:10,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126573838] [2020-10-14 09:04:10,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:10,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:10,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:10,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:10,390 INFO L87 Difference]: Start difference. First operand 2703 states and 3544 transitions. Second operand 6 states. [2020-10-14 09:04:25,041 WARN L193 SmtUtils]: Spent 14.50 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1245 [2020-10-14 09:04:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:54,936 INFO L93 Difference]: Finished difference Result 4445 states and 6064 transitions. [2020-10-14 09:04:54,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:04:54,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-14 09:04:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:54,948 INFO L225 Difference]: With dead ends: 4445 [2020-10-14 09:04:54,948 INFO L226 Difference]: Without dead ends: 2303 [2020-10-14 09:04:54,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:04:54,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2020-10-14 09:04:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2303. [2020-10-14 09:04:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-10-14 09:04:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3111 transitions. [2020-10-14 09:04:55,042 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3111 transitions. Word has length 122 [2020-10-14 09:04:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:55,043 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 3111 transitions. [2020-10-14 09:04:55,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3111 transitions. [2020-10-14 09:04:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:04:55,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:55,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:55,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:04:55,052 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1354916159, now seen corresponding path program 1 times [2020-10-14 09:04:55,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:55,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213977029] [2020-10-14 09:04:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:55,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:00,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:05:00,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:05:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 09:05:00,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 09:05:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0