/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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:42:43,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:42:43,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:42:43,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:42:43,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:42:43,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:42:43,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:42:43,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:42:43,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:42:43,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:42:43,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:42:43,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:42:43,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:42:43,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:42:43,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:42:43,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:42:43,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:42:43,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:42:43,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:42:43,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:42:43,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:42:43,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:42:43,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:42:43,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:42:43,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:42:43,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:42:43,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:42:43,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:42:43,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:42:43,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:42:43,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:42:43,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:42:43,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:42:43,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:42:43,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:42:43,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:42:43,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:42:43,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:42:43,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:42:43,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:42:43,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:42:43,484 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 [2020-09-25 13:42:43,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:42:43,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:42:43,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:42:43,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:42:43,542 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:42:43,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:42:43,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:42:43,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:42:43,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:42:43,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:42:43,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:42:43,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:42:43,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:42:43,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:42:43,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:42:43,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:42:43,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:42:43,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:42:43,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:42:43,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:42:43,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:42:43,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:42:43,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:42:43,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:42:43,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:42:43,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:42:43,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:42:43,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:42:43,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:42:43,548 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 13:42:44,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:42:44,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:42:44,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:42:44,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:42:44,064 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:42:44,065 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:42:44,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c444e5b2/6f2ac73d17134185a39565ae82ea3736/FLAG3e9a55958 [2020-09-25 13:42:44,963 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:42:44,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:42:44,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c444e5b2/6f2ac73d17134185a39565ae82ea3736/FLAG3e9a55958 [2020-09-25 13:42:45,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c444e5b2/6f2ac73d17134185a39565ae82ea3736 [2020-09-25 13:42:45,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:42:45,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:42:45,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:42:45,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:42:45,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:42:45,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:42:45" (1/1) ... [2020-09-25 13:42:45,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d1a539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:45, skipping insertion in model container [2020-09-25 13:42:45,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:42:45" (1/1) ... [2020-09-25 13:42:45,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:42:45,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:42:46,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:42:46,840 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:42:47,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:42:47,811 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:42:47,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47 WrapperNode [2020-09-25 13:42:47,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:42:47,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:42:47,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:42:47,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:42:47,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:47,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:47,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:47,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:47,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:48,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:48,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (1/1) ... [2020-09-25 13:42:48,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:42:48,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:42:48,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:42:48,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:42:48,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (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 [2020-09-25 13:42:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:42:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:42:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:42:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:42:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:42:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:42:48,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 13:42:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 13:42:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 13:42:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:42:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:42:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 13:42:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 13:42:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-25 13:42:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-25 13:42:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-25 13:42:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-25 13:42:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 13:42:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 13:42:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:42:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:42:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:42:52,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:42:52,535 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:42:52,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:42:52 BoogieIcfgContainer [2020-09-25 13:42:52,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:42:52,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:42:52,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:42:52,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:42:52,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:42:45" (1/3) ... [2020-09-25 13:42:52,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d42e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:42:52, skipping insertion in model container [2020-09-25 13:42:52,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:42:47" (2/3) ... [2020-09-25 13:42:52,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d42e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:42:52, skipping insertion in model container [2020-09-25 13:42:52,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:42:52" (3/3) ... [2020-09-25 13:42:52,579 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-25 13:42:52,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:42:52,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-25 13:42:52,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-25 13:42:52,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:42:52,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:42:52,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:42:52,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:42:52,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:42:52,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:42:52,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:42:52,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:42:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states. [2020-09-25 13:42:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-09-25 13:42:52,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:42:52,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:42:52,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:42:52,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:42:52,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1117929472, now seen corresponding path program 1 times [2020-09-25 13:42:52,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:42:52,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293582876] [2020-09-25 13:42:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:42:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:42:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:42:59,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:42:59,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 942 [2020-09-25 13:42:59,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:42:59,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-09-25 13:42:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:42:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:42:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:42:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-09-25 13:42:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 13:42:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:43:00,901 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-25 13:43:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:43:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:01,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:01,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:43:01,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:43:01,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 13:43:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:01,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:43:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:43:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:43:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:43:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:43:01,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293582876] [2020-09-25 13:43:01,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:43:01,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:43:01,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370467790] [2020-09-25 13:43:01,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:43:01,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:43:01,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:43:01,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:43:01,910 INFO L87 Difference]: Start difference. First operand 3026 states. Second operand 5 states. [2020-09-25 13:43:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:43:29,693 INFO L93 Difference]: Finished difference Result 8290 states and 10619 transitions. [2020-09-25 13:43:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:43:29,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 935 [2020-09-25 13:43:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:43:29,749 INFO L225 Difference]: With dead ends: 8290 [2020-09-25 13:43:29,750 INFO L226 Difference]: Without dead ends: 5100 [2020-09-25 13:43:29,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:43:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2020-09-25 13:43:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 4540. [2020-09-25 13:43:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4540 states. [2020-09-25 13:43:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 5521 transitions. [2020-09-25 13:43:30,060 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 5521 transitions. Word has length 935 [2020-09-25 13:43:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:43:30,066 INFO L479 AbstractCegarLoop]: Abstraction has 4540 states and 5521 transitions. [2020-09-25 13:43:30,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:43:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 5521 transitions. [2020-09-25 13:43:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 938 [2020-09-25 13:43:30,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:43:30,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:43:30,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:43:30,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:43:30,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:43:30,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1698850790, now seen corresponding path program 1 times [2020-09-25 13:43:30,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:43:30,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069617650] [2020-09-25 13:43:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:43:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:32,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:33,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:35,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:35,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 944 [2020-09-25 13:43:35,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:43:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:43:35,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:43:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-09-25 13:43:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-09-25 13:43:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 13:43:36,853 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-25 13:43:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:43:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:43:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:43:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:43:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:43:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:43:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:43:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:43:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:43:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:43:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:43:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:43:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:43:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:43:38,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069617650] [2020-09-25 13:43:38,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:43:38,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:43:38,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700571826] [2020-09-25 13:43:38,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:43:38,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:43:38,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:43:38,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:43:38,873 INFO L87 Difference]: Start difference. First operand 4540 states and 5521 transitions. Second operand 5 states.