/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 NUM_FUNCTIONS --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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:19:50,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:19:50,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:19:50,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:19:50,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:19:50,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:19:50,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:19:50,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:19:50,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:19:50,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:19:50,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:19:50,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:19:50,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:19:50,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:19:50,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:19:50,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:19:50,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:19:50,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:19:50,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:19:50,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:19:50,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:19:50,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:19:50,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:19:50,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:19:50,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 14:19:50,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 14:19:50,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 14:19:50,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 14:19:50,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 14:19:50,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 14:19:50,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:19:50,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:19:50,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:19:50,659 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 [2020-07-20 14:19:50,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:19:50,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:19:50,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:19:50,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:19:50,685 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:19:50,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:19:50,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:19:50,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:19:50,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:19:50,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:19:50,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:19:50,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:19:50,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:19:50,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:19:50,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:19:50,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:19:50,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:19:50,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:19:50,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:19:50,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:19:50,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:19:50,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:19:50,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:19:50,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:19:50,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:19:50,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:19:50,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:50,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:19:50,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:19:50,692 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 -> NUM_FUNCTIONS 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 [2020-07-20 14:19:51,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:19:51,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:19:51,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:19:51,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:19:51,141 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:19:51,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 14:19:51,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6500b99a7/7e94c37816d1413f9b21ede1d2300a62/FLAGedd5ea5e9 [2020-07-20 14:19:51,679 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:19:51,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 14:19:51,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6500b99a7/7e94c37816d1413f9b21ede1d2300a62/FLAGedd5ea5e9 [2020-07-20 14:19:52,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6500b99a7/7e94c37816d1413f9b21ede1d2300a62 [2020-07-20 14:19:52,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:19:52,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:19:52,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:19:52,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:19:52,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:19:52,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29176e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52, skipping insertion in model container [2020-07-20 14:19:52,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:19:52,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:19:52,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:19:52,413 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:19:52,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:19:52,588 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:19:52,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52 WrapperNode [2020-07-20 14:19:52,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:19:52,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:19:52,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:19:52,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:19:52,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (1/1) ... [2020-07-20 14:19:52,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:19:52,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:19:52,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:19:52,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:19:52,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (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 [2020-07-20 14:19:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:19:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:19:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:19:52,718 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-20 14:19:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-20 14:19:52,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:19:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:19:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 14:19:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:19:52,719 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-20 14:19:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-20 14:19:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-20 14:19:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-20 14:19:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-20 14:19:52,720 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-20 14:19:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-20 14:19:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-20 14:19:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-20 14:19:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-20 14:19:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-20 14:19:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-20 14:19:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-20 14:19:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-20 14:19:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-20 14:19:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-20 14:19:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-20 14:19:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-20 14:19:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-20 14:19:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-20 14:19:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 14:19:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 14:19:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 14:19:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 14:19:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:19:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:19:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:19:53,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:19:53,193 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 14:19:53,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:19:53 BoogieIcfgContainer [2020-07-20 14:19:53,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:19:53,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:19:53,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:19:53,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:19:53,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:19:52" (1/3) ... [2020-07-20 14:19:53,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85ecc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:19:53, skipping insertion in model container [2020-07-20 14:19:53,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:52" (2/3) ... [2020-07-20 14:19:53,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85ecc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:19:53, skipping insertion in model container [2020-07-20 14:19:53,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:19:53" (3/3) ... [2020-07-20 14:19:53,213 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 14:19:53,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:19:53,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:19:53,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:19:53,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:19:53,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:19:53,270 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:19:53,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:19:53,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:19:53,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:19:53,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:19:53,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:19:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-20 14:19:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 14:19:53,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:53,302 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] [2020-07-20 14:19:53,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:53,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:53,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1663477819, now seen corresponding path program 1 times [2020-07-20 14:19:53,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:53,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288338681] [2020-07-20 14:19:53,320 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 [2020-07-20 14:19:53,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:53,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:19:53,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:53,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:53,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288338681] [2020-07-20 14:19:53,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:53,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:19:53,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84864461] [2020-07-20 14:19:53,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:19:53,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:53,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:19:53,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:19:53,654 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-07-20 14:19:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:53,681 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2020-07-20 14:19:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:19:53,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2020-07-20 14:19:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:53,692 INFO L225 Difference]: With dead ends: 102 [2020-07-20 14:19:53,692 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 14:19:53,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:19:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 14:19:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-20 14:19:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 14:19:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-07-20 14:19:53,743 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2020-07-20 14:19:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:53,744 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-07-20 14:19:53,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:19:53,744 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-07-20 14:19:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 14:19:53,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:53,749 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] [2020-07-20 14:19:53,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:53,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1140955694, now seen corresponding path program 1 times [2020-07-20 14:19:53,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:53,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97030749] [2020-07-20 14:19:53,967 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 [2020-07-20 14:19:54,090 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:54,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:54,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:19:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:54,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:54,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97030749] [2020-07-20 14:19:54,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:54,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:19:54,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702179466] [2020-07-20 14:19:54,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:19:54,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:54,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:19:54,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:19:54,157 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 3 states. [2020-07-20 14:19:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:54,177 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-07-20 14:19:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:19:54,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-20 14:19:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:54,179 INFO L225 Difference]: With dead ends: 83 [2020-07-20 14:19:54,179 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 14:19:54,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:19:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 14:19:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-20 14:19:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 14:19:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-07-20 14:19:54,189 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2020-07-20 14:19:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:54,190 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-07-20 14:19:54,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:19:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-07-20 14:19:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 14:19:54,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:54,192 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] [2020-07-20 14:19:54,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:54,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1359810412, now seen corresponding path program 1 times [2020-07-20 14:19:54,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:54,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907363485] [2020-07-20 14:19:54,409 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 [2020-07-20 14:19:54,495 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:54,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:54,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 14:19:54,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:54,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:54,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907363485] [2020-07-20 14:19:54,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:54,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:19:54,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552283201] [2020-07-20 14:19:54,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:19:54,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:54,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:19:54,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:19:54,544 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 3 states. [2020-07-20 14:19:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:54,576 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-07-20 14:19:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:19:54,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-20 14:19:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:54,580 INFO L225 Difference]: With dead ends: 90 [2020-07-20 14:19:54,580 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 14:19:54,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:19:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 14:19:54,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-07-20 14:19:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-20 14:19:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-07-20 14:19:54,588 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 36 [2020-07-20 14:19:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:54,588 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-07-20 14:19:54,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:19:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-07-20 14:19:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 14:19:54,590 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:54,590 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] [2020-07-20 14:19:54,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:54,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:54,807 INFO L82 PathProgramCache]: Analyzing trace with hash 446687854, now seen corresponding path program 1 times [2020-07-20 14:19:54,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:54,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858850487] [2020-07-20 14:19:54,808 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 [2020-07-20 14:19:54,892 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:54,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:54,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:19:54,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:54,958 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:19:54,978 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:19:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:19:54,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:54,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858850487] [2020-07-20 14:19:54,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:54,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:19:54,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216334083] [2020-07-20 14:19:54,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:19:54,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:54,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:19:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:19:54,999 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 5 states. [2020-07-20 14:19:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:55,148 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-07-20 14:19:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:19:55,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-20 14:19:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:55,152 INFO L225 Difference]: With dead ends: 109 [2020-07-20 14:19:55,153 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 14:19:55,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:19:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 14:19:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2020-07-20 14:19:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 14:19:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-07-20 14:19:55,182 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 38 [2020-07-20 14:19:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:55,183 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-07-20 14:19:55,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:19:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-07-20 14:19:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 14:19:55,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:55,187 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] [2020-07-20 14:19:55,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:55,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash -140118160, now seen corresponding path program 1 times [2020-07-20 14:19:55,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:55,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398404085] [2020-07-20 14:19:55,402 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 [2020-07-20 14:19:55,473 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:55,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:55,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:19:55,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:55,497 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:19:55,521 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:19:55,573 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 14:19:55,575 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:19:55,579 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:19:55,580 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:19:55,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 14:19:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:19:55,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:55,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398404085] [2020-07-20 14:19:55,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:55,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:19:55,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183518814] [2020-07-20 14:19:55,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:19:55,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:19:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:19:55,600 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 6 states. [2020-07-20 14:19:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:55,722 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2020-07-20 14:19:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:19:55,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-20 14:19:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:55,725 INFO L225 Difference]: With dead ends: 122 [2020-07-20 14:19:55,725 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 14:19:55,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:19:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 14:19:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2020-07-20 14:19:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 14:19:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2020-07-20 14:19:55,735 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 38 [2020-07-20 14:19:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:55,736 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2020-07-20 14:19:55,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:19:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2020-07-20 14:19:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 14:19:55,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:55,738 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] [2020-07-20 14:19:55,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:55,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:55,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1829061902, now seen corresponding path program 1 times [2020-07-20 14:19:55,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:55,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767350407] [2020-07-20 14:19:55,954 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 [2020-07-20 14:19:56,029 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:19:56,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:56,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:19:56,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:56,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:19:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:56,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767350407] [2020-07-20 14:19:56,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:19:56,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-20 14:19:56,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746630522] [2020-07-20 14:19:56,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:19:56,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:19:56,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:19:56,096 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 6 states. [2020-07-20 14:19:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:56,121 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2020-07-20 14:19:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:19:56,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-20 14:19:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:56,123 INFO L225 Difference]: With dead ends: 117 [2020-07-20 14:19:56,123 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 14:19:56,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:19:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 14:19:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-07-20 14:19:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-20 14:19:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-07-20 14:19:56,131 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 38 [2020-07-20 14:19:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:56,131 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-07-20 14:19:56,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:19:56,131 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-07-20 14:19:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 14:19:56,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:56,133 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] [2020-07-20 14:19:56,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:56,345 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:56,346 INFO L82 PathProgramCache]: Analyzing trace with hash 882604280, now seen corresponding path program 2 times [2020-07-20 14:19:56,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:56,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406334571] [2020-07-20 14:19:56,348 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 [2020-07-20 14:19:56,434 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:19:56,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:56,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:19:56,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:56,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:19:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:19:56,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406334571] [2020-07-20 14:19:56,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:19:56,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 14:19:56,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768980602] [2020-07-20 14:19:56,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 14:19:56,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:56,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 14:19:56,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-20 14:19:56,564 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 10 states. [2020-07-20 14:19:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:56,609 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2020-07-20 14:19:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 14:19:56,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-07-20 14:19:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:56,611 INFO L225 Difference]: With dead ends: 125 [2020-07-20 14:19:56,612 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 14:19:56,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-07-20 14:19:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 14:19:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-20 14:19:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 14:19:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-07-20 14:19:56,620 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 44 [2020-07-20 14:19:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:56,620 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-07-20 14:19:56,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 14:19:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2020-07-20 14:19:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 14:19:56,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:56,622 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:19:56,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:56,838 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1162447360, now seen corresponding path program 3 times [2020-07-20 14:19:56,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:56,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916642298] [2020-07-20 14:19:56,839 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 [2020-07-20 14:19:56,978 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:19:56,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:56,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:19:56,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-20 14:19:57,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:57,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916642298] [2020-07-20 14:19:57,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:57,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:19:57,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883976581] [2020-07-20 14:19:57,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:19:57,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:57,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:19:57,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:19:57,028 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand 5 states. [2020-07-20 14:19:57,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:57,146 INFO L93 Difference]: Finished difference Result 150 states and 184 transitions. [2020-07-20 14:19:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:19:57,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-07-20 14:19:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:57,148 INFO L225 Difference]: With dead ends: 150 [2020-07-20 14:19:57,148 INFO L226 Difference]: Without dead ends: 85 [2020-07-20 14:19:57,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:19:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-20 14:19:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2020-07-20 14:19:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 14:19:57,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-07-20 14:19:57,168 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 52 [2020-07-20 14:19:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:57,168 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-07-20 14:19:57,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:19:57,169 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-07-20 14:19:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 14:19:57,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:57,170 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-07-20 14:19:57,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:57,371 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:57,372 INFO L82 PathProgramCache]: Analyzing trace with hash 108083261, now seen corresponding path program 1 times [2020-07-20 14:19:57,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:57,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13700220] [2020-07-20 14:19:57,373 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 [2020-07-20 14:19:57,513 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:19:57,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:57,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:19:57,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-20 14:19:57,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:19:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-07-20 14:19:57,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13700220] [2020-07-20 14:19:57,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:19:57,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-07-20 14:19:57,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797236729] [2020-07-20 14:19:57,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 14:19:57,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:57,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 14:19:57,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-20 14:19:57,629 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 11 states. [2020-07-20 14:19:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:58,051 INFO L93 Difference]: Finished difference Result 276 states and 354 transitions. [2020-07-20 14:19:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 14:19:58,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-20 14:19:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:58,053 INFO L225 Difference]: With dead ends: 276 [2020-07-20 14:19:58,054 INFO L226 Difference]: Without dead ends: 154 [2020-07-20 14:19:58,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-07-20 14:19:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-20 14:19:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 82. [2020-07-20 14:19:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-20 14:19:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-07-20 14:19:58,077 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 57 [2020-07-20 14:19:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:58,078 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-07-20 14:19:58,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 14:19:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-07-20 14:19:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 14:19:58,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:19:58,083 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-07-20 14:19:58,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:58,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:19:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:19:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1580860481, now seen corresponding path program 1 times [2020-07-20 14:19:58,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:19:58,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585526473] [2020-07-20 14:19:58,303 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:58,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:19:58,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:19:58,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:19:58,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:19:58,495 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:19:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-07-20 14:19:58,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:19:58,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585526473] [2020-07-20 14:19:58,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:19:58,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:19:58,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034422392] [2020-07-20 14:19:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:19:58,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:19:58,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:19:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:19:58,516 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 5 states. [2020-07-20 14:19:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:19:58,580 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2020-07-20 14:19:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:19:58,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-07-20 14:19:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:19:58,582 INFO L225 Difference]: With dead ends: 106 [2020-07-20 14:19:58,582 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:19:58,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:19:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:19:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:19:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:19:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:19:58,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-20 14:19:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:19:58,588 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:19:58,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:19:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:19:58,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:19:58,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:19:58,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:19:58,922 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-07-20 14:19:58,922 INFO L268 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2020-07-20 14:19:58,922 INFO L268 CegarLoopResult]: For program point L60-4(lines 54 72) no Hoare annotation was computed. [2020-07-20 14:19:58,923 INFO L268 CegarLoopResult]: For program point L56-1(line 56) no Hoare annotation was computed. [2020-07-20 14:19:58,923 INFO L268 CegarLoopResult]: For program point L56-3(line 56) no Hoare annotation was computed. [2020-07-20 14:19:58,923 INFO L271 CegarLoopResult]: At program point L56-5(line 56) the Hoare annotation is: true [2020-07-20 14:19:58,923 INFO L268 CegarLoopResult]: For program point L52-1(lines 52 73) no Hoare annotation was computed. [2020-07-20 14:19:58,923 INFO L268 CegarLoopResult]: For program point L56-6(line 56) no Hoare annotation was computed. [2020-07-20 14:19:58,923 INFO L268 CegarLoopResult]: For program point L52-2(lines 52 73) no Hoare annotation was computed. [2020-07-20 14:19:58,924 INFO L271 CegarLoopResult]: At program point L52-4(lines 52 73) the Hoare annotation is: true [2020-07-20 14:19:58,924 INFO L268 CegarLoopResult]: For program point L52-5(lines 52 73) no Hoare annotation was computed. [2020-07-20 14:19:58,924 INFO L264 CegarLoopResult]: At program point L65(line 65) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-07-20 14:19:58,925 INFO L268 CegarLoopResult]: For program point L65-1(line 65) no Hoare annotation was computed. [2020-07-20 14:19:58,925 INFO L268 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-07-20 14:19:58,925 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-07-20 14:19:58,926 INFO L268 CegarLoopResult]: For program point L57-2(line 57) no Hoare annotation was computed. [2020-07-20 14:19:58,926 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-07-20 14:19:58,926 INFO L268 CegarLoopResult]: For program point L66-1(line 66) no Hoare annotation was computed. [2020-07-20 14:19:58,926 INFO L268 CegarLoopResult]: For program point parse_expression_listFINAL(lines 47 75) no Hoare annotation was computed. [2020-07-20 14:19:58,926 INFO L268 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-07-20 14:19:58,926 INFO L271 CegarLoopResult]: At program point parse_expression_listENTRY(lines 47 75) the Hoare annotation is: true [2020-07-20 14:19:58,926 INFO L268 CegarLoopResult]: For program point L54(lines 54 72) no Hoare annotation was computed. [2020-07-20 14:19:58,926 INFO L268 CegarLoopResult]: For program point parse_expression_listEXIT(lines 47 75) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L59-2(line 59) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L59-4(line 59) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L59-6(line 59) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-07-20 14:19:58,927 INFO L271 CegarLoopResult]: At program point L59-8(line 59) the Hoare annotation is: true [2020-07-20 14:19:58,927 INFO L268 CegarLoopResult]: For program point L59-9(line 59) no Hoare annotation was computed. [2020-07-20 14:19:58,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:19:58,928 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:19:58,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:19:58,928 INFO L268 CegarLoopResult]: For program point r_strncpyFINAL(line 31) no Hoare annotation was computed. [2020-07-20 14:19:58,928 INFO L268 CegarLoopResult]: For program point r_strncpyEXIT(line 31) no Hoare annotation was computed. [2020-07-20 14:19:58,928 INFO L271 CegarLoopResult]: At program point r_strncpyENTRY(line 31) the Hoare annotation is: true [2020-07-20 14:19:58,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:19:58,928 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:19:58,929 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:19:58,929 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:19:58,929 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 76 85) the Hoare annotation is: true [2020-07-20 14:19:58,929 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 76 85) no Hoare annotation was computed. [2020-07-20 14:19:58,929 INFO L271 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: true [2020-07-20 14:19:58,930 INFO L268 CegarLoopResult]: For program point L83-1(line 83) no Hoare annotation was computed. [2020-07-20 14:19:58,930 INFO L268 CegarLoopResult]: For program point L79-2(lines 79 81) no Hoare annotation was computed. [2020-07-20 14:19:58,930 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 76 85) no Hoare annotation was computed. [2020-07-20 14:19:58,930 INFO L271 CegarLoopResult]: At program point L79-3(lines 79 81) the Hoare annotation is: true [2020-07-20 14:19:58,930 INFO L268 CegarLoopResult]: For program point L79-4(lines 79 81) no Hoare annotation was computed. [2020-07-20 14:19:58,930 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-20 14:19:58,930 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-20 14:19:58,930 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 14:19:58,931 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-20 14:19:58,931 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-20 14:19:58,931 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-20 14:19:58,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:19:58 BoogieIcfgContainer [2020-07-20 14:19:58,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:19:58,948 INFO L168 Benchmark]: Toolchain (without parser) took 6914.26 ms. Allocated memory was 148.9 MB in the beginning and 265.3 MB in the end (delta: 116.4 MB). Free memory was 106.3 MB in the beginning and 201.9 MB in the end (delta: -95.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:19:58,951 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 125.1 MB in the beginning and 124.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 14:19:58,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.89 ms. Allocated memory was 148.9 MB in the beginning and 203.4 MB in the end (delta: 54.5 MB). Free memory was 105.9 MB in the beginning and 179.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:19:58,960 INFO L168 Benchmark]: Boogie Preprocessor took 55.62 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 177.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:19:58,966 INFO L168 Benchmark]: RCFGBuilder took 552.81 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 148.7 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:19:58,970 INFO L168 Benchmark]: TraceAbstraction took 5746.95 ms. Allocated memory was 203.4 MB in the beginning and 265.3 MB in the end (delta: 61.9 MB). Free memory was 148.1 MB in the beginning and 201.9 MB in the end (delta: -53.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:19:58,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 125.1 MB in the beginning and 124.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 551.89 ms. Allocated memory was 148.9 MB in the beginning and 203.4 MB in the end (delta: 54.5 MB). Free memory was 105.9 MB in the beginning and 179.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.62 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 177.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 552.81 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 148.7 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5746.95 ms. Allocated memory was 203.4 MB in the beginning and 265.3 MB in the end (delta: 61.9 MB). Free memory was 148.1 MB in the beginning and 201.9 MB in the end (delta: -53.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 79]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 528 SDtfs, 361 SDslu, 1104 SDs, 0 SdLazy, 514 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 572 GetRequests, 519 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=9, 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, 10 MinimizatonAttempts, 131 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 56 PreInvPairs, 89 NumberOfFragments, 22 HoareAnnotationTreeSize, 56 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 428 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 47561 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1452 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 260/298 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...