/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:36:15,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:36:15,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:36:15,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:36:15,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:36:15,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:36:15,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:36:15,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:36:15,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:36:15,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:36:15,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:36:15,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:36:15,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:36:15,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:36:15,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:36:15,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:36:15,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:36:15,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:36:15,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:36:15,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:36:15,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:36:15,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:36:15,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:36:15,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:36:15,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:36:15,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:36:15,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:36:15,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:36:15,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:36:15,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 23:36:15,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:36:15,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:36:15,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:36:15,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 23:36:15,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:36:15,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:36:15,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:36:15,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:36:15,717 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:36:15,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:36:15,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:36:15,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:36:15,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:36:15,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:36:15,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:36:15,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:36:15,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:36:15,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:36:15,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:36:15,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:36:15,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:36:15,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:36:15,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:36:15,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:36:15,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:36:15,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:36:15,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:36:15,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:36:15,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:36:15,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:36:15,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:15,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:36:15,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:36:15,724 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 23:36:16,078 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:36:16,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:36:16,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:36:16,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:36:16,109 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:36:16,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-07-21 23:36:16,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b6b9650/a6fa0817f0284273ab94a94bdb3bc533/FLAG836f98d2e [2020-07-21 23:36:16,786 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:36:16,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-07-21 23:36:16,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b6b9650/a6fa0817f0284273ab94a94bdb3bc533/FLAG836f98d2e [2020-07-21 23:36:17,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b6b9650/a6fa0817f0284273ab94a94bdb3bc533 [2020-07-21 23:36:17,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:36:17,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:36:17,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:36:17,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:36:17,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:36:17,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5b764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17, skipping insertion in model container [2020-07-21 23:36:17,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:36:17,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:36:17,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:36:17,594 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:36:17,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:36:17,704 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:36:17,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17 WrapperNode [2020-07-21 23:36:17,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:36:17,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:36:17,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:36:17,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:36:17,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... [2020-07-21 23:36:17,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:36:17,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:36:17,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:36:17,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:36:17,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 23:36:17,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:36:17,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:36:17,995 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:36:17,995 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-21 23:36:17,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-21 23:36:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-21 23:36:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-21 23:36:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-21 23:36:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-21 23:36:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-21 23:36:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-21 23:36:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:36:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:36:17,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:36:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:36:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:36:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-21 23:36:17,998 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 23:36:17,999 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-21 23:36:17,999 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-21 23:36:17,999 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-21 23:36:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-21 23:36:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-21 23:36:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 23:36:18,000 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-21 23:36:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-21 23:36:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 23:36:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:36:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:36:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 23:36:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 23:36:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 23:36:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 23:36:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 23:36:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 23:36:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 23:36:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 23:36:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:36:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 23:36:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:36:18,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:36:18,983 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-21 23:36:18,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:36:18 BoogieIcfgContainer [2020-07-21 23:36:18,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:36:18,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:36:18,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:36:19,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:36:19,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:36:17" (1/3) ... [2020-07-21 23:36:19,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db6d1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:36:19, skipping insertion in model container [2020-07-21 23:36:19,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:17" (2/3) ... [2020-07-21 23:36:19,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db6d1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:36:19, skipping insertion in model container [2020-07-21 23:36:19,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:36:18" (3/3) ... [2020-07-21 23:36:19,010 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2020-07-21 23:36:19,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:36:19,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:36:19,045 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:36:19,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:36:19,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:36:19,078 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:36:19,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:36:19,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:36:19,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:36:19,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:36:19,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:36:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-21 23:36:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 23:36:19,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:19,120 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] [2020-07-21 23:36:19,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-07-21 23:36:19,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:19,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017233742] [2020-07-21 23:36:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:19,581 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:36:19,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:19,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:36:19,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:36:19,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:36:19,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017233742] [2020-07-21 23:36:19,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:36:19,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:36:19,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759173347] [2020-07-21 23:36:19,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:36:19,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:36:19,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:19,694 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-21 23:36:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:19,790 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-07-21 23:36:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:36:19,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-21 23:36:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:19,810 INFO L225 Difference]: With dead ends: 262 [2020-07-21 23:36:19,811 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 23:36:19,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 23:36:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2020-07-21 23:36:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 23:36:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-07-21 23:36:19,897 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-07-21 23:36:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:19,898 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-07-21 23:36:19,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:36:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-07-21 23:36:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 23:36:19,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:19,903 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] [2020-07-21 23:36:20,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:20,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-07-21 23:36:20,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:20,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372327183] [2020-07-21 23:36:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:20,362 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:36:20,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:36:20,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:36:20,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:36:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:36:20,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372327183] [2020-07-21 23:36:20,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:36:20,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 23:36:20,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437603252] [2020-07-21 23:36:20,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:36:20,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:20,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:36:20,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:36:20,517 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 6 states. [2020-07-21 23:36:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:20,803 INFO L93 Difference]: Finished difference Result 306 states and 448 transitions. [2020-07-21 23:36:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:36:20,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-07-21 23:36:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:20,809 INFO L225 Difference]: With dead ends: 306 [2020-07-21 23:36:20,810 INFO L226 Difference]: Without dead ends: 202 [2020-07-21 23:36:20,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:36:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-21 23:36:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 126. [2020-07-21 23:36:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 23:36:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2020-07-21 23:36:20,837 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 41 [2020-07-21 23:36:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:20,838 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2020-07-21 23:36:20,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:36:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2020-07-21 23:36:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 23:36:20,841 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:20,841 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:21,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:21,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:21,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:21,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1573985069, now seen corresponding path program 2 times [2020-07-21 23:36:21,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:21,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047778324] [2020-07-21 23:36:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:21,311 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:36:21,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:21,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:36:21,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:36:21,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:36:21,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047778324] [2020-07-21 23:36:21,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:36:21,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:36:21,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123120653] [2020-07-21 23:36:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:36:21,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:36:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:21,351 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand 3 states. [2020-07-21 23:36:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:21,377 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2020-07-21 23:36:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:36:21,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 23:36:21,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:21,380 INFO L225 Difference]: With dead ends: 176 [2020-07-21 23:36:21,380 INFO L226 Difference]: Without dead ends: 134 [2020-07-21 23:36:21,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:21,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-21 23:36:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2020-07-21 23:36:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 23:36:21,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2020-07-21 23:36:21,396 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 47 [2020-07-21 23:36:21,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:21,396 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2020-07-21 23:36:21,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:36:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2020-07-21 23:36:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 23:36:21,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:21,399 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:21,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:21,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:21,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1406882848, now seen corresponding path program 1 times [2020-07-21 23:36:21,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:21,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694008969] [2020-07-21 23:36:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:21,830 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:36:21,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:21,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:36:21,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:36:21,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:36:21,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694008969] [2020-07-21 23:36:21,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:36:21,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:36:21,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506153122] [2020-07-21 23:36:21,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:36:21,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:21,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:36:21,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:21,855 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand 3 states. [2020-07-21 23:36:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:21,892 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2020-07-21 23:36:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:36:21,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 23:36:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:21,895 INFO L225 Difference]: With dead ends: 186 [2020-07-21 23:36:21,895 INFO L226 Difference]: Without dead ends: 144 [2020-07-21 23:36:21,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-21 23:36:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2020-07-21 23:36:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 23:36:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2020-07-21 23:36:21,909 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 48 [2020-07-21 23:36:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:21,910 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2020-07-21 23:36:21,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:36:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2020-07-21 23:36:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 23:36:21,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:21,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:22,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:22,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1601345574, now seen corresponding path program 1 times [2020-07-21 23:36:22,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:22,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206181563] [2020-07-21 23:36:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:22,647 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:36:22,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:22,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:36:22,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:36:22,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:36:22,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206181563] [2020-07-21 23:36:22,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:36:22,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:36:22,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080139530] [2020-07-21 23:36:22,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:36:22,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:22,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:36:22,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:22,687 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand 3 states. [2020-07-21 23:36:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:22,743 INFO L93 Difference]: Finished difference Result 165 states and 219 transitions. [2020-07-21 23:36:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:36:22,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 23:36:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:22,746 INFO L225 Difference]: With dead ends: 165 [2020-07-21 23:36:22,746 INFO L226 Difference]: Without dead ends: 131 [2020-07-21 23:36:22,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:36:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-21 23:36:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-07-21 23:36:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 23:36:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 173 transitions. [2020-07-21 23:36:22,757 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 173 transitions. Word has length 53 [2020-07-21 23:36:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:22,758 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 173 transitions. [2020-07-21 23:36:22,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:36:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 173 transitions. [2020-07-21 23:36:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 23:36:22,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:22,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:22,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:22,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:22,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1437146227, now seen corresponding path program 1 times [2020-07-21 23:36:22,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:22,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732800843] [2020-07-21 23:36:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:23,435 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:36:23,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:23,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:36:23,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:36:23,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:36:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:36:23,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732800843] [2020-07-21 23:36:23,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:36:23,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 23:36:23,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623666857] [2020-07-21 23:36:23,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:36:23,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:36:23,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:36:23,546 INFO L87 Difference]: Start difference. First operand 128 states and 173 transitions. Second operand 6 states. [2020-07-21 23:36:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:23,660 INFO L93 Difference]: Finished difference Result 174 states and 234 transitions. [2020-07-21 23:36:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:36:23,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 23:36:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:23,663 INFO L225 Difference]: With dead ends: 174 [2020-07-21 23:36:23,663 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 23:36:23,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:36:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 23:36:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-21 23:36:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-21 23:36:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 191 transitions. [2020-07-21 23:36:23,675 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 191 transitions. Word has length 57 [2020-07-21 23:36:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:23,676 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 191 transitions. [2020-07-21 23:36:23,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:36:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 191 transitions. [2020-07-21 23:36:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-21 23:36:23,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:23,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:23,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:23,892 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:23,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1396605122, now seen corresponding path program 2 times [2020-07-21 23:36:23,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:23,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634084466] [2020-07-21 23:36:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:24,554 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:36:24,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:24,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:36:24,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 23:36:24,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:36:24,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634084466] [2020-07-21 23:36:24,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:36:24,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:36:24,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531622521] [2020-07-21 23:36:24,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:36:24,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:24,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:36:24,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:36:24,599 INFO L87 Difference]: Start difference. First operand 140 states and 191 transitions. Second operand 4 states. [2020-07-21 23:36:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:24,649 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2020-07-21 23:36:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:36:24,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-07-21 23:36:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:24,654 INFO L225 Difference]: With dead ends: 180 [2020-07-21 23:36:24,654 INFO L226 Difference]: Without dead ends: 147 [2020-07-21 23:36:24,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:36:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-07-21 23:36:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-07-21 23:36:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-21 23:36:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2020-07-21 23:36:24,671 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 69 [2020-07-21 23:36:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:24,673 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2020-07-21 23:36:24,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:36:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2020-07-21 23:36:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 23:36:24,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:24,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:24,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:24,891 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:24,892 INFO L82 PathProgramCache]: Analyzing trace with hash 950165009, now seen corresponding path program 1 times [2020-07-21 23:36:24,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:24,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801010568] [2020-07-21 23:36:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:25,654 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:36:25,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:25,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 23:36:25,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 23:36:25,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:36:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 23:36:25,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801010568] [2020-07-21 23:36:25,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:36:25,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-21 23:36:25,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392732694] [2020-07-21 23:36:25,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 23:36:25,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:25,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 23:36:25,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 23:36:25,847 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand 9 states. [2020-07-21 23:36:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:26,065 INFO L93 Difference]: Finished difference Result 195 states and 256 transitions. [2020-07-21 23:36:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 23:36:26,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-07-21 23:36:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:26,070 INFO L225 Difference]: With dead ends: 195 [2020-07-21 23:36:26,070 INFO L226 Difference]: Without dead ends: 161 [2020-07-21 23:36:26,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-21 23:36:26,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-07-21 23:36:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-07-21 23:36:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 23:36:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2020-07-21 23:36:26,088 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 75 [2020-07-21 23:36:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:26,092 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2020-07-21 23:36:26,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 23:36:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2020-07-21 23:36:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-21 23:36:26,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:36:26,094 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:36:26,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:26,310 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:36:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:36:26,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1150515746, now seen corresponding path program 1 times [2020-07-21 23:36:26,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:36:26,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289039975] [2020-07-21 23:36:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:29,008 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:36:29,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:36:29,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:36:29,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:36:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-07-21 23:36:29,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:36:29,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289039975] [2020-07-21 23:36:29,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:36:29,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:36:29,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012471427] [2020-07-21 23:36:29,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:36:29,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:36:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:36:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:36:29,078 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand 4 states. [2020-07-21 23:36:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:36:29,105 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2020-07-21 23:36:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:36:29,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-07-21 23:36:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:36:29,107 INFO L225 Difference]: With dead ends: 161 [2020-07-21 23:36:29,107 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:36:29,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:36:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:36:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:36:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:36:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:36:29,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-07-21 23:36:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:36:29,110 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:36:29,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:36:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:36:29,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:36:29,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:36:29,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:36:29,580 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-21 23:36:29,581 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-21 23:36:29,581 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-21 23:36:29,581 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-21 23:36:29,581 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 23:36:29,582 INFO L264 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: (= 0 Id_MCDC_99_~Id_MCDC_140~0) [2020-07-21 23:36:29,582 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-21 23:36:29,582 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-21 23:36:29,582 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-21 23:36:29,582 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-21 23:36:29,582 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-21 23:36:29,583 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-21 23:36:29,583 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-21 23:36:29,583 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-21 23:36:29,583 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-21 23:36:29,583 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-21 23:36:29,583 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-21 23:36:29,584 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-21 23:36:29,584 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-21 23:36:29,584 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-21 23:36:29,584 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-21 23:36:29,584 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-21 23:36:29,585 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-21 23:36:29,585 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-21 23:36:29,585 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-21 23:36:29,585 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-21 23:36:29,585 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-21 23:36:29,585 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-21 23:36:29,586 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-21 23:36:29,586 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-21 23:36:29,586 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-21 23:36:29,586 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-21 23:36:29,586 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-21 23:36:29,587 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-21 23:36:29,587 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-21 23:36:29,587 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-21 23:36:29,587 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-21 23:36:29,587 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-21 23:36:29,587 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-21 23:36:29,587 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-21 23:36:29,588 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-21 23:36:29,589 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:36:29,589 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:36:29,590 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-21 23:36:29,590 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-21 23:36:29,591 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-21 23:36:29,591 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-21 23:36:29,592 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-21 23:36:29,592 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-21 23:36:29,592 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-21 23:36:29,592 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-21 23:36:29,593 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-21 23:36:29,593 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-21 23:36:29,593 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-21 23:36:29,593 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-21 23:36:29,593 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-21 23:36:29,593 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-21 23:36:29,593 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-21 23:36:29,594 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-21 23:36:29,596 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-21 23:36:29,596 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-21 23:36:29,596 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-21 23:36:29,596 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-21 23:36:29,596 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-21 23:36:29,596 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-21 23:36:29,597 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-21 23:36:29,597 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 23:36:29,597 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-21 23:36:29,598 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-21 23:36:29,598 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-21 23:36:29,598 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-21 23:36:29,598 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-21 23:36:29,598 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-21 23:36:29,598 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 23:36:29,598 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-21 23:36:29,599 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-21 23:36:29,600 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-21 23:36:29,600 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-21 23:36:29,601 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-21 23:36:29,601 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-21 23:36:29,601 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-21 23:36:29,601 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-21 23:36:29,601 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-21 23:36:29,601 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-21 23:36:29,601 INFO L271 CegarLoopResult]: At program point L272(line 272) the Hoare annotation is: true [2020-07-21 23:36:29,601 INFO L268 CegarLoopResult]: For program point L272-1(line 272) no Hoare annotation was computed. [2020-07-21 23:36:29,602 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-21 23:36:29,602 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-21 23:36:29,602 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-21 23:36:29,602 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-21 23:36:29,602 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:36:29,603 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:36:29,603 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:36:29,603 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:36:29,603 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:36:29,603 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:36:29,603 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:36:29,603 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 23:36:29,604 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-21 23:36:29,604 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 23:36:29,604 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 23:36:29,604 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-21 23:36:29,604 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 23:36:29,604 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-21 23:36:29,605 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-21 23:36:29,605 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-21 23:36:29,605 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-21 23:36:29,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:36:29 BoogieIcfgContainer [2020-07-21 23:36:29,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:36:29,645 INFO L168 Benchmark]: Toolchain (without parser) took 12567.94 ms. Allocated memory was 143.7 MB in the beginning and 298.3 MB in the end (delta: 154.7 MB). Free memory was 100.5 MB in the beginning and 189.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:36:29,646 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 23:36:29,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.23 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 100.0 MB in the beginning and 172.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-21 23:36:29,648 INFO L168 Benchmark]: Boogie Preprocessor took 165.64 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-21 23:36:29,648 INFO L168 Benchmark]: RCFGBuilder took 1116.63 ms. Allocated memory is still 202.4 MB. Free memory was 168.8 MB in the beginning and 105.8 MB in the end (delta: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:36:29,656 INFO L168 Benchmark]: TraceAbstraction took 10640.68 ms. Allocated memory was 202.4 MB in the beginning and 298.3 MB in the end (delta: 95.9 MB). Free memory was 105.8 MB in the beginning and 189.1 MB in the end (delta: -83.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-21 23:36:29,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.23 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 100.0 MB in the beginning and 172.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.64 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1116.63 ms. Allocated memory is still 202.4 MB. Free memory was 168.8 MB in the beginning and 105.8 MB in the end (delta: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10640.68 ms. Allocated memory was 202.4 MB in the beginning and 298.3 MB in the end (delta: 95.9 MB). Free memory was 105.8 MB in the beginning and 189.1 MB in the end (delta: -83.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1553 SDtfs, 259 SDslu, 3386 SDs, 0 SdLazy, 223 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 644 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 124 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 191 PreInvPairs, 229 NumberOfFragments, 44 HoareAnnotationTreeSize, 191 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 506 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 48651 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5223 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 266/274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...