/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:28,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:28,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:28,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:44:28,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:44:28,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:44:28,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:44:28,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:44:28,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:44:28,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:44:28,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:44:28,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:44:28,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:44:28,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:44:28,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:44:28,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:44:28,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:44:28,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:44:28,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:44:28,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:44:28,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:44:28,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:44:28,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:44:28,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:44:28,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:44:28,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:28,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:28,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:28,702 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 [2020-10-23 18:44:28,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:28,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:28,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:28,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:28,731 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:28,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:28,732 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:28,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:28,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:28,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:28,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:28,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:28,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:28,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:28,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:28,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:28,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:28,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:28,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:28,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:28,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:28,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:28,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:28,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:28,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:28,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:28,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:28,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:28,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:28,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:29,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:29,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:29,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:29,161 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:29,162 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:29,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-10-23 18:44:29,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b1ffaad/1ac2914ddd3b48e2be764dfd155371d4/FLAGd17272001 [2020-10-23 18:44:30,005 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:30,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-10-23 18:44:30,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b1ffaad/1ac2914ddd3b48e2be764dfd155371d4/FLAGd17272001 [2020-10-23 18:44:30,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b1ffaad/1ac2914ddd3b48e2be764dfd155371d4 [2020-10-23 18:44:30,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:30,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:30,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:30,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:30,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:30,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6c706c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30, skipping insertion in model container [2020-10-23 18:44:30,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:30,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:30,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:30,577 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:30,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:30,614 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:30,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30 WrapperNode [2020-10-23 18:44:30,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:30,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:30,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:30,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:30,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (1/1) ... [2020-10-23 18:44:30,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:30,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:30,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:30,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:30,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (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 [2020-10-23 18:44:30,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:30,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:30,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:31,145 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:31,147 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:44:31,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:31 BoogieIcfgContainer [2020-10-23 18:44:31,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:31,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:31,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:31,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:31,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:30" (1/3) ... [2020-10-23 18:44:31,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43437d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:31, skipping insertion in model container [2020-10-23 18:44:31,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:30" (2/3) ... [2020-10-23 18:44:31,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43437d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:31, skipping insertion in model container [2020-10-23 18:44:31,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:31" (3/3) ... [2020-10-23 18:44:31,162 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-10-23 18:44:31,177 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:31,182 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:31,198 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:31,239 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:31,239 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:31,240 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:31,240 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:31,240 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:31,240 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:31,240 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:31,240 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-23 18:44:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:44:31,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:31,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:31,272 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash -268642109, now seen corresponding path program 1 times [2020-10-23 18:44:31,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:31,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827130850] [2020-10-23 18:44:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,762 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-23 18:44:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:31,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827130850] [2020-10-23 18:44:31,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:31,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:44:31,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3905741] [2020-10-23 18:44:31,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:44:31,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:31,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:44:31,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:44:31,844 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-10-23 18:44:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:31,994 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-10-23 18:44:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:44:31,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-23 18:44:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:32,005 INFO L225 Difference]: With dead ends: 31 [2020-10-23 18:44:32,005 INFO L226 Difference]: Without dead ends: 14 [2020-10-23 18:44:32,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:44:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-23 18:44:32,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-23 18:44:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-23 18:44:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-23 18:44:32,054 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-23 18:44:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:32,055 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-23 18:44:32,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:44:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-23 18:44:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:44:32,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:32,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:32,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:32,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:32,058 INFO L82 PathProgramCache]: Analyzing trace with hash 260084366, now seen corresponding path program 1 times [2020-10-23 18:44:32,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:32,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385327188] [2020-10-23 18:44:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:32,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385327188] [2020-10-23 18:44:32,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458120225] [2020-10-23 18:44:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-23 18:44:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:32,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:44:32,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:32,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:32,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:32,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:32,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-23 18:44:32,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436306261] [2020-10-23 18:44:32,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:44:32,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:44:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:44:32,404 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-10-23 18:44:32,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:32,672 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-23 18:44:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:44:32,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-23 18:44:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:32,674 INFO L225 Difference]: With dead ends: 19 [2020-10-23 18:44:32,674 INFO L226 Difference]: Without dead ends: 15 [2020-10-23 18:44:32,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-23 18:44:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-23 18:44:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-23 18:44:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-23 18:44:32,683 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-23 18:44:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:32,683 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-23 18:44:32,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:44:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-23 18:44:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:44:32,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:32,685 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:32,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:44:32,901 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:32,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:32,903 INFO L82 PathProgramCache]: Analyzing trace with hash -529264093, now seen corresponding path program 2 times [2020-10-23 18:44:32,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:32,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422591016] [2020-10-23 18:44:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422591016] [2020-10-23 18:44:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449258092] [2020-10-23 18:44:33,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-23 18:44:33,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:44:33,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:33,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-23 18:44:33,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:33,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:33,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:33,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:33,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-23 18:44:33,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259247258] [2020-10-23 18:44:33,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:44:33,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:33,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:44:33,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:44:33,271 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-10-23 18:44:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:33,526 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-23 18:44:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:33,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-23 18:44:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:33,527 INFO L225 Difference]: With dead ends: 20 [2020-10-23 18:44:33,528 INFO L226 Difference]: Without dead ends: 16 [2020-10-23 18:44:33,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:44:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-23 18:44:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-23 18:44:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-23 18:44:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-23 18:44:33,535 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-23 18:44:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:33,535 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-23 18:44:33,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:44:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-23 18:44:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:44:33,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:33,536 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:33,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:33,738 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:33,739 INFO L82 PathProgramCache]: Analyzing trace with hash 770737454, now seen corresponding path program 3 times [2020-10-23 18:44:33,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:33,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19526553] [2020-10-23 18:44:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 18:44:33,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19526553] [2020-10-23 18:44:33,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:33,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:44:33,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074736941] [2020-10-23 18:44:33,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:44:33,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:33,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:44:33,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:44:33,830 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-10-23 18:44:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:33,923 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-23 18:44:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:44:33,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-23 18:44:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:33,924 INFO L225 Difference]: With dead ends: 16 [2020-10-23 18:44:33,924 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:33,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:44:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:33,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-23 18:44:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:33,926 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:33,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:44:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:33,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:33,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:44:33,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:34,108 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-23 18:44:34,108 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 18:44:34,108 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-23 18:44:34,109 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-23 18:44:34,109 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:34,109 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= ~__return_144~0 |old(~__return_144~0)|)) [2020-10-23 18:44:34,109 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:34,109 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:34,110 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:34,110 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:34,110 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:34,110 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:44:34,110 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-23 18:44:34,110 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:44:34,110 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-23 18:44:34,111 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 60) the Hoare annotation is: (= |old(~__return_144~0)| ~__return_144~0) [2020-10-23 18:44:34,111 INFO L274 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-10-23 18:44:34,111 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 60) no Hoare annotation was computed. [2020-10-23 18:44:34,111 INFO L274 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-10-23 18:44:34,111 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-10-23 18:44:34,111 INFO L274 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-23 18:44:34,111 INFO L274 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-10-23 18:44:34,112 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 60) no Hoare annotation was computed. [2020-10-23 18:44:34,112 INFO L270 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (let ((.cse0 (= |old(~__return_144~0)| ~__return_144~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and (<= (+ main_~main__x~0 2) main_~main__y~0) .cse0))) [2020-10-23 18:44:34,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:34 BoogieIcfgContainer [2020-10-23 18:44:34,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:34,147 INFO L168 Benchmark]: Toolchain (without parser) took 3794.32 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 141.1 MB in the beginning and 170.1 MB in the end (delta: -29.0 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:34,149 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 97.3 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:34,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.88 ms. Allocated memory is still 165.7 MB. Free memory was 140.5 MB in the beginning and 131.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:34,153 INFO L168 Benchmark]: Boogie Preprocessor took 35.74 ms. Allocated memory is still 165.7 MB. Free memory was 131.1 MB in the beginning and 129.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:34,160 INFO L168 Benchmark]: RCFGBuilder took 496.87 ms. Allocated memory is still 165.7 MB. Free memory was 129.1 MB in the beginning and 142.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:34,160 INFO L168 Benchmark]: TraceAbstraction took 2991.02 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 141.8 MB in the beginning and 170.1 MB in the end (delta: -28.3 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:34,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 97.3 MB in the end (delta: 67.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.88 ms. Allocated memory is still 165.7 MB. Free memory was 140.5 MB in the beginning and 131.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.74 ms. Allocated memory is still 165.7 MB. Free memory was 131.1 MB in the beginning and 129.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.87 ms. Allocated memory is still 165.7 MB. Free memory was 129.1 MB in the beginning and 142.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2991.02 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 141.8 MB in the beginning and 170.1 MB in the end (delta: -28.3 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 30]: Loop Invariant Derived loop invariant: (\old(__return_144) == __return_144 && main__x + 50 <= 0) || (main__x + 2 <= main__y && \old(__return_144) == __return_144) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 37 SDslu, 60 SDs, 0 SdLazy, 97 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 63 HoareAnnotationTreeSize, 10 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 4054 SizeOfPredicates, 8 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/14 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...