/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:16:41,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:16:41,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:16:41,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:16:41,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:16:41,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:16:41,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:16:41,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:16:41,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:16:41,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:16:41,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:16:41,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:16:41,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:16:41,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:16:41,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:16:41,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:16:41,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:16:41,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:16:41,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:16:41,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:16:41,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:16:41,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:16:41,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:16:41,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:16:41,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:16:41,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:16:41,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:16:41,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:16:41,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:16:41,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:16:41,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:16:41,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:16:41,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:16:41,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:16:41,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:16:41,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:16:41,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:16:41,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:16:41,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:16:41,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:16:41,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:16:41,295 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 [2020-10-15 04:16:41,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:16:41,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:16:41,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:16:41,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:16:41,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:16:41,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:16:41,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:16:41,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:16:41,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:16:41,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:16:41,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:16:41,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:16:41,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:16:41,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:16:41,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:16:41,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:16:41,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:16:41,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:16:41,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:16:41,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:16:41,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:16:41,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:16:41,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:16:41,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:16:41,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:16:41,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:16:41,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:16:41,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:16:41,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:16:41,352 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:16:41,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:16:41,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:16:41,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:16:41,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:16:41,651 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:16:41,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:16:41,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f3c8efe0/f69b4df53bb64ef18cc0c92780e33cf2/FLAG546a159b6 [2020-10-15 04:16:42,643 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:16:42,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:16:42,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f3c8efe0/f69b4df53bb64ef18cc0c92780e33cf2/FLAG546a159b6 [2020-10-15 04:16:43,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f3c8efe0/f69b4df53bb64ef18cc0c92780e33cf2 [2020-10-15 04:16:43,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:16:43,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:16:43,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:43,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:16:43,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:16:43,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:43" (1/1) ... [2020-10-15 04:16:43,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d1a64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:43, skipping insertion in model container [2020-10-15 04:16:43,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:16:43" (1/1) ... [2020-10-15 04:16:43,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:16:43,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:16:48,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:48,288 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:16:52,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:16:52,813 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:16:52,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52 WrapperNode [2020-10-15 04:16:52,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:16:52,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:16:52,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:16:52,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:16:52,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:52,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:52,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:52,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:53,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:53,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:53,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (1/1) ... [2020-10-15 04:16:53,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:16:53,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:16:53,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:16:53,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:16:53,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (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 [2020-10-15 04:16:53,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:16:53,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:16:53,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:16:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:16:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:16:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:16:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:16:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:16:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:16:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:16:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:16:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:16:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:16:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:16:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:16:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:16:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:16:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:16:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:16:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:16:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:16:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:17:07,703 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:17:07,703 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:17:07,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:07 BoogieIcfgContainer [2020-10-15 04:17:07,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:17:07,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:17:07,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:17:07,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:17:07,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:16:43" (1/3) ... [2020-10-15 04:17:07,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580e7237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:07, skipping insertion in model container [2020-10-15 04:17:07,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:16:52" (2/3) ... [2020-10-15 04:17:07,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580e7237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:17:07, skipping insertion in model container [2020-10-15 04:17:07,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:17:07" (3/3) ... [2020-10-15 04:17:07,735 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-15 04:17:07,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:17:07,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:17:07,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:17:07,822 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:17:07,822 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:17:07,822 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:17:07,823 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:17:07,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:17:07,823 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:17:07,823 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:17:07,823 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:17:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 6854 states. [2020-10-15 04:17:07,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-15 04:17:07,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:17:07,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:17:07,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:17:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:17:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash 433085375, now seen corresponding path program 1 times [2020-10-15 04:17:08,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:17:08,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115309480] [2020-10-15 04:17:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:17:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-15 04:17:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:17:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-15 04:17:13,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:13,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:17:13,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:17:13,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-15 04:17:13,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:17:15,985 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 490 [2020-10-15 04:17:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:17:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:17:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:17:16,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:17:16,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:17:16,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:17:16,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 04:17:16,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:17:16,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:17:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:17:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:17:16,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:17:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:17:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:17:16,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115309480] [2020-10-15 04:17:16,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:17:16,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:17:16,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641904539] [2020-10-15 04:17:16,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:17:16,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:17:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:17:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:17:16,930 INFO L87 Difference]: Start difference. First operand 6854 states. Second operand 5 states. [2020-10-15 04:18:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:18:22,220 INFO L93 Difference]: Finished difference Result 20373 states and 35615 transitions. [2020-10-15 04:18:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 04:18:22,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2020-10-15 04:18:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:18:22,332 INFO L225 Difference]: With dead ends: 20373 [2020-10-15 04:18:22,333 INFO L226 Difference]: Without dead ends: 13576 [2020-10-15 04:18:22,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:18:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13576 states. [2020-10-15 04:18:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13576 to 13574. [2020-10-15 04:18:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13574 states. [2020-10-15 04:18:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 22301 transitions. [2020-10-15 04:18:23,232 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 22301 transitions. Word has length 392 [2020-10-15 04:18:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:18:23,234 INFO L479 AbstractCegarLoop]: Abstraction has 13574 states and 22301 transitions. [2020-10-15 04:18:23,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:18:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 22301 transitions. [2020-10-15 04:18:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-15 04:18:23,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:18:23,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:18:23,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:18:23,278 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:18:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:18:23,279 INFO L82 PathProgramCache]: Analyzing trace with hash 208001547, now seen corresponding path program 1 times [2020-10-15 04:18:23,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:18:23,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069428136] [2020-10-15 04:18:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:18:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:28,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:28,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-15 04:18:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:18:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-15 04:18:28,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:18:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:18:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-15 04:18:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:18:30,086 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 490 [2020-10-15 04:18:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:18:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:18:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:18:30,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:18:30,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:18:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:18:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 04:18:30,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:18:30,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:18:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:18:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:18:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:18:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:18:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:18:30,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069428136] [2020-10-15 04:18:30,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:18:30,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:18:30,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600591132] [2020-10-15 04:18:30,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:18:30,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:18:30,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:18:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:18:30,703 INFO L87 Difference]: Start difference. First operand 13574 states and 22301 transitions. Second operand 5 states. [2020-10-15 04:19:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:19:51,550 INFO L93 Difference]: Finished difference Result 39640 states and 65112 transitions. [2020-10-15 04:19:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:19:51,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2020-10-15 04:19:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:19:51,643 INFO L225 Difference]: With dead ends: 39640 [2020-10-15 04:19:51,643 INFO L226 Difference]: Without dead ends: 26205 [2020-10-15 04:19:51,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:19:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26205 states. [2020-10-15 04:19:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26205 to 26203. [2020-10-15 04:19:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26203 states. [2020-10-15 04:19:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26203 states to 26203 states and 42863 transitions. [2020-10-15 04:19:53,162 INFO L78 Accepts]: Start accepts. Automaton has 26203 states and 42863 transitions. Word has length 392 [2020-10-15 04:19:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:19:53,164 INFO L479 AbstractCegarLoop]: Abstraction has 26203 states and 42863 transitions. [2020-10-15 04:19:53,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:19:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 26203 states and 42863 transitions. [2020-10-15 04:19:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-15 04:19:53,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:19:53,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:19:53,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:19:53,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:19:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:19:53,235 INFO L82 PathProgramCache]: Analyzing trace with hash -154849196, now seen corresponding path program 1 times [2020-10-15 04:19:53,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:19:53,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689618167] [2020-10-15 04:19:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:19:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:53,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:54,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:57,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:58,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:58,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-15 04:19:58,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:19:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 04:19:58,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:58,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:19:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 04:19:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-15 04:19:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:19:59,891 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 490 [2020-10-15 04:19:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:19:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:19:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:19:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:19:59,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:19:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:19:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 04:19:59,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:19:59,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:19:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:19:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:19:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:19:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:20:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:20:00,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689618167] [2020-10-15 04:20:00,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:20:00,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:20:00,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144908383] [2020-10-15 04:20:00,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:20:00,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:20:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:20:00,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:20:00,234 INFO L87 Difference]: Start difference. First operand 26203 states and 42863 transitions. Second operand 4 states.