/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.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 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:45:41,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:45:41,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:45:41,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:45:41,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:45:41,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:45:41,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:45:41,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:45:41,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:45:41,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:45:41,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:45:41,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:45:41,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:45:41,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:45:41,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:45:41,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:45:41,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:45:41,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:45:41,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:45:41,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:45:41,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:45:41,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:45:41,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:45:41,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:45:41,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:45:41,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:45:41,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:45:41,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:45:41,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:45:41,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-19 23:45:41,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:45:41,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:45:41,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:45:41,603 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 [2020-07-19 23:45:41,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:45:41,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:45:41,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:45:41,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:45:41,641 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:45:41,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:45:41,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:45:41,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:45:41,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:45:41,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:45:41,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:45:41,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:45:41,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:45:41,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:45:41,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:45:41,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:45:41,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:45:41,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:45:41,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:45:41,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:45:41,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:45:41,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:45:41,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:45:41,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:45:41,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:45:41,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:45:41,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:45:41,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:45:41,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:45:41,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:45:41,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:45:41,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:45:41,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:45:41,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:45:41,939 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:45:41,940 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-19 23:45:42,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c07d8cae/82c8150a34924fb9824c77b467da8b9e/FLAGd0b8cedb0 [2020-07-19 23:45:42,482 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:45:42,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-19 23:45:42,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c07d8cae/82c8150a34924fb9824c77b467da8b9e/FLAGd0b8cedb0 [2020-07-19 23:45:42,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c07d8cae/82c8150a34924fb9824c77b467da8b9e [2020-07-19 23:45:42,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:45:42,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:45:42,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:45:42,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:45:42,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:45:42,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:45:42" (1/1) ... [2020-07-19 23:45:42,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6c8161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:42, skipping insertion in model container [2020-07-19 23:45:42,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:45:42" (1/1) ... [2020-07-19 23:45:42,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:45:42,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:45:43,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:45:43,265 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:45:43,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:45:43,380 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:45:43,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43 WrapperNode [2020-07-19 23:45:43,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:45:43,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:45:43,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:45:43,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:45:43,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (1/1) ... [2020-07-19 23:45:43,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:45:43,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:45:43,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:45:43,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:45:43,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (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 [2020-07-19 23:45:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:45:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:45:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:45:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-19 23:45:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-19 23:45:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-19 23:45:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-19 23:45:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-19 23:45:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-19 23:45:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-19 23:45:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-19 23:45:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:45:43,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:45:43,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:45:43,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:45:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:45:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-19 23:45:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-19 23:45:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-19 23:45:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-19 23:45:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-19 23:45:43,556 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-19 23:45:43,556 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-19 23:45:43,556 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:45:43,556 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-19 23:45:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-19 23:45:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-19 23:45:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:45:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:45:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:45:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 23:45:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:45:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 23:45:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:45:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:45:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:45:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 23:45:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:45:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-19 23:45:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:45:44,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:45:44,479 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-19 23:45:44,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:45:44 BoogieIcfgContainer [2020-07-19 23:45:44,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:45:44,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:45:44,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:45:44,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:45:44,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:45:42" (1/3) ... [2020-07-19 23:45:44,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a8edb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:45:44, skipping insertion in model container [2020-07-19 23:45:44,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:45:43" (2/3) ... [2020-07-19 23:45:44,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a8edb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:45:44, skipping insertion in model container [2020-07-19 23:45:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:45:44" (3/3) ... [2020-07-19 23:45:44,492 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-07-19 23:45:44,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:45:44,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:45:44,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:45:44,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:45:44,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:45:44,542 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:45:44,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:45:44,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:45:44,543 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:45:44,543 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:45:44,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:45:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-07-19 23:45:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-19 23:45:44,574 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:44,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:44,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-07-19 23:45:44,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:44,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437322045] [2020-07-19 23:45:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:45,072 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-19 23:45:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:45:45,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437322045] [2020-07-19 23:45:45,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:45:45,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:45:45,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157499533] [2020-07-19 23:45:45,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:45:45,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:45,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:45:45,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:45:45,316 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-07-19 23:45:45,475 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-19 23:45:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:46,595 INFO L93 Difference]: Finished difference Result 266 states and 409 transitions. [2020-07-19 23:45:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:45:46,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-19 23:45:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:46,614 INFO L225 Difference]: With dead ends: 266 [2020-07-19 23:45:46,615 INFO L226 Difference]: Without dead ends: 141 [2020-07-19 23:45:46,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:45:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-19 23:45:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-07-19 23:45:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-19 23:45:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-07-19 23:45:46,694 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-07-19 23:45:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:46,695 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-07-19 23:45:46,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:45:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-07-19 23:45:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 23:45:46,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:46,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:46,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:45:46,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:46,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-07-19 23:45:46,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:46,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840388359] [2020-07-19 23:45:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:45:46,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840388359] [2020-07-19 23:45:46,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657798144] [2020-07-19 23:45:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76894230 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:47,150 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@76894230 issued 2 check-sat command(s) [2020-07-19 23:45:47,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:47,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-19 23:45:47,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:45:47,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:45:47,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2020-07-19 23:45:47,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295554331] [2020-07-19 23:45:47,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:45:47,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:47,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:45:47,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:45:47,200 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 7 states. [2020-07-19 23:45:49,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:49,660 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2020-07-19 23:45:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:45:49,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-07-19 23:45:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:49,673 INFO L225 Difference]: With dead ends: 267 [2020-07-19 23:45:49,673 INFO L226 Difference]: Without dead ends: 162 [2020-07-19 23:45:49,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:45:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-19 23:45:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123. [2020-07-19 23:45:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-19 23:45:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-07-19 23:45:49,698 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 45 [2020-07-19 23:45:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:49,699 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-07-19 23:45:49,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:45:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-07-19 23:45:49,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-19 23:45:49,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:49,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:49,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:45:49,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:49,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:49,918 INFO L82 PathProgramCache]: Analyzing trace with hash 677722022, now seen corresponding path program 1 times [2020-07-19 23:45:49,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:49,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927343085] [2020-07-19 23:45:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 23:45:50,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927343085] [2020-07-19 23:45:50,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67741211] [2020-07-19 23:45:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e3a408 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:50,350 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e3a408 issued 2 check-sat command(s) [2020-07-19 23:45:50,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:50,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-19 23:45:50,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-19 23:45:50,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:45:50,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-07-19 23:45:50,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011741674] [2020-07-19 23:45:50,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:45:50,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:50,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:45:50,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:45:50,384 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 3 states. [2020-07-19 23:45:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:50,416 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2020-07-19 23:45:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:45:50,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-19 23:45:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:50,419 INFO L225 Difference]: With dead ends: 174 [2020-07-19 23:45:50,419 INFO L226 Difference]: Without dead ends: 131 [2020-07-19 23:45:50,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:45:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-19 23:45:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2020-07-19 23:45:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-19 23:45:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2020-07-19 23:45:50,441 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2020-07-19 23:45:50,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:50,442 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2020-07-19 23:45:50,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:45:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2020-07-19 23:45:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-19 23:45:50,444 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:50,444 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:50,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:50,658 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1725617515, now seen corresponding path program 1 times [2020-07-19 23:45:50,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:50,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29197319] [2020-07-19 23:45:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 23:45:50,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29197319] [2020-07-19 23:45:50,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248751794] [2020-07-19 23:45:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a7223d8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:51,016 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a7223d8 issued 2 check-sat command(s) [2020-07-19 23:45:51,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-19 23:45:51,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-19 23:45:51,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:45:51,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-07-19 23:45:51,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034543927] [2020-07-19 23:45:51,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:45:51,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:51,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:45:51,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:45:51,040 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 3 states. [2020-07-19 23:45:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:51,070 INFO L93 Difference]: Finished difference Result 184 states and 252 transitions. [2020-07-19 23:45:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:45:51,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-19 23:45:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:51,073 INFO L225 Difference]: With dead ends: 184 [2020-07-19 23:45:51,073 INFO L226 Difference]: Without dead ends: 141 [2020-07-19 23:45:51,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:45:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-19 23:45:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2020-07-19 23:45:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-19 23:45:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-07-19 23:45:51,091 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 52 [2020-07-19 23:45:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:51,091 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-07-19 23:45:51,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:45:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2020-07-19 23:45:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-19 23:45:51,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:51,097 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:51,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:51,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:51,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2080054737, now seen corresponding path program 1 times [2020-07-19 23:45:51,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:51,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69626495] [2020-07-19 23:45:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:45:51,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69626495] [2020-07-19 23:45:51,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005443290] [2020-07-19 23:45:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f86f51d No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:51,751 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f86f51d issued 2 check-sat command(s) [2020-07-19 23:45:51,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:51,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 23:45:51,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:45:51,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 23:45:51,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2020-07-19 23:45:51,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661697502] [2020-07-19 23:45:51,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:45:51,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:51,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:45:51,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:45:51,793 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 4 states. [2020-07-19 23:45:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:51,860 INFO L93 Difference]: Finished difference Result 168 states and 224 transitions. [2020-07-19 23:45:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:45:51,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-07-19 23:45:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:51,862 INFO L225 Difference]: With dead ends: 168 [2020-07-19 23:45:51,862 INFO L226 Difference]: Without dead ends: 136 [2020-07-19 23:45:51,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-19 23:45:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-19 23:45:51,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-07-19 23:45:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-19 23:45:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 186 transitions. [2020-07-19 23:45:51,880 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 186 transitions. Word has length 53 [2020-07-19 23:45:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:51,880 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 186 transitions. [2020-07-19 23:45:51,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:45:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 186 transitions. [2020-07-19 23:45:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-19 23:45:51,882 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:51,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:52,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:52,096 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:52,097 INFO L82 PathProgramCache]: Analyzing trace with hash -326846377, now seen corresponding path program 1 times [2020-07-19 23:45:52,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:52,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051654669] [2020-07-19 23:45:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 23:45:52,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051654669] [2020-07-19 23:45:52,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326293517] [2020-07-19 23:45:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6aa65eed No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:52,548 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6aa65eed issued 3 check-sat command(s) [2020-07-19 23:45:52,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:52,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-19 23:45:52,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 23:45:52,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:45:52,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2020-07-19 23:45:52,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218800758] [2020-07-19 23:45:52,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 23:45:52,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 23:45:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:45:52,605 INFO L87 Difference]: Start difference. First operand 136 states and 186 transitions. Second operand 8 states. [2020-07-19 23:45:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:54,001 INFO L93 Difference]: Finished difference Result 314 states and 450 transitions. [2020-07-19 23:45:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:45:54,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-07-19 23:45:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:54,004 INFO L225 Difference]: With dead ends: 314 [2020-07-19 23:45:54,004 INFO L226 Difference]: Without dead ends: 196 [2020-07-19 23:45:54,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:45:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-19 23:45:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 138. [2020-07-19 23:45:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-19 23:45:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2020-07-19 23:45:54,027 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 61 [2020-07-19 23:45:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:54,027 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2020-07-19 23:45:54,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 23:45:54,028 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2020-07-19 23:45:54,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-19 23:45:54,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:54,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:54,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-19 23:45:54,245 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1657015001, now seen corresponding path program 2 times [2020-07-19 23:45:54,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:54,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188559075] [2020-07-19 23:45:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:45:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 23:45:54,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188559075] [2020-07-19 23:45:54,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585221198] [2020-07-19 23:45:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6544c385 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:54,713 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6544c385 issued 3 check-sat command(s) [2020-07-19 23:45:54,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:54,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-19 23:45:54,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 23:45:54,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:45:54,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2020-07-19 23:45:54,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728605200] [2020-07-19 23:45:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:45:54,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:54,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:45:54,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:45:54,763 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand 9 states. [2020-07-19 23:45:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:56,365 INFO L93 Difference]: Finished difference Result 335 states and 483 transitions. [2020-07-19 23:45:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:45:56,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-07-19 23:45:56,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:56,369 INFO L225 Difference]: With dead ends: 335 [2020-07-19 23:45:56,370 INFO L226 Difference]: Without dead ends: 217 [2020-07-19 23:45:56,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-19 23:45:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-19 23:45:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 140. [2020-07-19 23:45:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-19 23:45:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2020-07-19 23:45:56,387 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 63 [2020-07-19 23:45:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:56,387 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2020-07-19 23:45:56,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:45:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2020-07-19 23:45:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-19 23:45:56,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:45:56,389 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:45:56,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:56,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:45:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:45:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1182319835, now seen corresponding path program 3 times [2020-07-19 23:45:56,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:45:56,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889664177] [2020-07-19 23:45:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62045a5f [2020-07-19 23:45:56,637 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:45:56,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546785270] [2020-07-19 23:45:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68d32034 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:57,457 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@68d32034 issued 4 check-sat command(s) [2020-07-19 23:45:57,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:45:57,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-19 23:45:57,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:45:57,477 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:45:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-19 23:45:57,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889664177] [2020-07-19 23:45:57,494 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-19 23:45:57,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546785270] [2020-07-19 23:45:57,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:45:57,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:45:57,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114086011] [2020-07-19 23:45:57,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:45:57,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:45:57,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:45:57,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:45:57,496 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 5 states. [2020-07-19 23:45:57,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:45:57,537 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2020-07-19 23:45:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:45:57,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-07-19 23:45:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:45:57,539 INFO L225 Difference]: With dead ends: 176 [2020-07-19 23:45:57,539 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:45:57,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:45:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:45:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:45:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:45:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:45:57,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2020-07-19 23:45:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:45:57,542 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:45:57,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:45:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:45:57,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:45:57,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:45:57,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:45:58,528 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 7 [2020-07-19 23:45:58,978 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 7 [2020-07-19 23:45:59,234 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2020-07-19 23:45:59,556 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 7 [2020-07-19 23:45:59,780 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 9 [2020-07-19 23:45:59,873 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-19 23:45:59,873 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-19 23:45:59,873 INFO L264 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:45:59,874 INFO L264 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:45:59,874 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-19 23:45:59,874 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-19 23:45:59,874 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-19 23:45:59,874 INFO L264 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:45:59,874 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-19 23:45:59,875 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-19 23:45:59,875 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-19 23:45:59,875 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-19 23:45:59,875 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-19 23:45:59,875 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-19 23:45:59,875 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-19 23:45:59,875 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-19 23:45:59,875 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-19 23:45:59,876 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-19 23:45:59,877 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-19 23:45:59,878 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-19 23:45:59,879 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:45:59,879 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-19 23:45:59,879 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-19 23:45:59,879 INFO L264 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:45:59,879 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-19 23:45:59,879 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:45:59,879 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-19 23:45:59,880 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:45:59,880 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-19 23:45:59,880 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-19 23:45:59,880 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-19 23:45:59,880 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-19 23:45:59,880 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-19 23:45:59,880 INFO L264 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-19 23:45:59,881 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-19 23:45:59,881 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-19 23:45:59,881 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-19 23:45:59,881 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-19 23:45:59,881 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-19 23:45:59,881 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-19 23:45:59,881 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-19 23:45:59,881 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-19 23:45:59,882 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-19 23:45:59,882 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-19 23:45:59,882 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-19 23:45:59,882 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-19 23:45:59,882 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-19 23:45:59,882 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-19 23:45:59,882 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-19 23:45:59,882 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-19 23:45:59,883 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-19 23:45:59,883 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-19 23:45:59,883 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-19 23:45:59,883 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-19 23:45:59,883 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-19 23:45:59,883 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93)) [2020-07-19 23:45:59,883 INFO L264 CegarLoopResult]: At program point L296-2(line 296) the Hoare annotation is: (and |Id_MCDC_95_#t~short23| (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)))) [2020-07-19 23:45:59,883 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-19 23:45:59,883 INFO L268 CegarLoopResult]: For program point L296-3(line 296) no Hoare annotation was computed. [2020-07-19 23:45:59,883 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93)) [2020-07-19 23:45:59,883 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93)) [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-19 23:45:59,884 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-19 23:45:59,885 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-19 23:45:59,885 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-19 23:45:59,886 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-19 23:45:59,886 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-19 23:45:59,886 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-19 23:45:59,887 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-19 23:45:59,887 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:45:59,887 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~Id_MCDC_111~0.base |old(~Id_MCDC_111~0.base)|) (= |#t~string14.base| |old(#t~string14.base)|) (= |old(#t~string38.offset)| |#t~string38.offset|) (= |old(~Id_MCDC_105~0)| ~Id_MCDC_105~0) (= |old(#t~string65.base)| |#t~string65.base|) (= |old(~Id_MCDC_109~0.base)| ~Id_MCDC_109~0.base) (= |#t~string9.offset| |old(#t~string9.offset)|) (= |old(~#Id_MCDC_113~0.offset)| |~#Id_MCDC_113~0.offset|) (= |#t~string14.offset| |old(#t~string14.offset)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#t~string33.base)| |#t~string33.base|) (= |old(#t~string38.base)| |#t~string38.base|) (= ~Id_MCDC_107~0.offset |old(~Id_MCDC_107~0.offset)|) (= |old(~Id_MCDC_110~0.base)| ~Id_MCDC_110~0.base) (= |old(#t~string66.offset)| |#t~string66.offset|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string65.offset| |old(#t~string65.offset)|) (= ~Id_MCDC_107~0.base |old(~Id_MCDC_107~0.base)|) (= |old(#length)| |#length|) (= ~Id_MCDC_109~0.offset |old(~Id_MCDC_109~0.offset)|) (= |old(~#Id_MCDC_112~0.offset)| |~#Id_MCDC_112~0.offset|) (= |old(~Id_MCDC_106~0)| ~Id_MCDC_106~0) (= |old(~Id_MCDC_108~0.offset)| ~Id_MCDC_108~0.offset) (= |old(#t~string66.base)| |#t~string66.base|) (= |old(#t~string20.offset)| |#t~string20.offset|) (= |~#Id_MCDC_112~0.base| |old(~#Id_MCDC_112~0.base)|) (= |old(~Id_MCDC_111~0.offset)| ~Id_MCDC_111~0.offset) (= |old(#t~string20.base)| |#t~string20.base|) (= |#t~string9.base| |old(#t~string9.base)|) (= |#valid| |old(#valid)|) (= |old(~Id_MCDC_104~0)| ~Id_MCDC_104~0) (= ~Id_MCDC_108~0.base |old(~Id_MCDC_108~0.base)|) (= |old(#t~string33.offset)| |#t~string33.offset|) (= ~Id_MCDC_110~0.offset |old(~Id_MCDC_110~0.offset)|) (= |old(~#Id_MCDC_113~0.base)| |~#Id_MCDC_113~0.base|)) [2020-07-19 23:45:59,887 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:45:59,887 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:45:59,887 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:45:59,887 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-19 23:45:59,888 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-19 23:45:59,888 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-19 23:45:59,888 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-19 23:45:59,889 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-19 23:45:59,889 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-19 23:45:59,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:45:59 BoogieIcfgContainer [2020-07-19 23:45:59,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:45:59,907 INFO L168 Benchmark]: Toolchain (without parser) took 17107.74 ms. Allocated memory was 145.8 MB in the beginning and 422.6 MB in the end (delta: 276.8 MB). Free memory was 103.0 MB in the beginning and 219.5 MB in the end (delta: -116.4 MB). Peak memory consumption was 257.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:45:59,908 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 23:45:59,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.03 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 173.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:45:59,909 INFO L168 Benchmark]: Boogie Preprocessor took 96.87 ms. Allocated memory is still 202.9 MB. Free memory was 173.2 MB in the beginning and 168.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:45:59,910 INFO L168 Benchmark]: RCFGBuilder took 1005.32 ms. Allocated memory is still 202.9 MB. Free memory was 168.8 MB in the beginning and 106.1 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:45:59,911 INFO L168 Benchmark]: TraceAbstraction took 15420.28 ms. Allocated memory was 202.9 MB in the beginning and 422.6 MB in the end (delta: 219.7 MB). Free memory was 105.4 MB in the beginning and 219.5 MB in the end (delta: -114.1 MB). Peak memory consumption was 203.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:45:59,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 579.03 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 173.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.87 ms. Allocated memory is still 202.9 MB. Free memory was 173.2 MB in the beginning and 168.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1005.32 ms. Allocated memory is still 202.9 MB. Free memory was 168.8 MB in the beginning and 106.1 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15420.28 ms. Allocated memory was 202.9 MB in the beginning and 422.6 MB in the end (delta: 219.7 MB). Free memory was 105.4 MB in the beginning and 219.5 MB in the end (delta: -114.1 MB). Peak memory consumption was 203.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1438 SDtfs, 1060 SDslu, 2384 SDs, 0 SdLazy, 2560 SolverSat, 227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=7, 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, 8 MinimizatonAttempts, 219 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 236 PreInvPairs, 261 NumberOfFragments, 279 HoareAnnotationTreeSize, 236 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 34 FomulaSimplificationsInter, 2866 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 758 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 744 ConstructedInterpolants, 0 QuantifiedInterpolants, 98189 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3338 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 90/130 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...