/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/loops/matrix-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:01,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:01,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:01,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:01,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:01,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:01,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:01,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:01,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:01,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:01,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:01,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:01,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:01,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:01,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:01,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:01,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:01,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:01,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:01,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:01,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:01,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:01,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:01,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:01,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:01,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:01,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:01,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:01,845 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 [2020-11-06 22:45:01,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:01,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:01,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:01,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:01,894 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:01,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:01,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:01,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:01,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:01,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:01,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:01,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:01,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:01,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:01,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:01,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:01,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:01,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:01,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:01,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:01,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:01,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:01,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:01,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:01,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:01,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:01,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:01,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:01,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:01,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:02,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:02,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:02,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:02,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:02,407 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:02,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-1.c [2020-11-06 22:45:02,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf2ec79f/6fb17d90a0ac4ba98d205f7223650c8f/FLAG156fb8e5e [2020-11-06 22:45:03,287 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:03,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c [2020-11-06 22:45:03,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf2ec79f/6fb17d90a0ac4ba98d205f7223650c8f/FLAG156fb8e5e [2020-11-06 22:45:03,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf2ec79f/6fb17d90a0ac4ba98d205f7223650c8f [2020-11-06 22:45:03,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:03,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:03,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:03,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:03,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:03,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da74b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03, skipping insertion in model container [2020-11-06 22:45:03,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:03,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:03,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:03,880 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:03,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:03,928 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:03,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03 WrapperNode [2020-11-06 22:45:03,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:03,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:03,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:03,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:03,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (1/1) ... [2020-11-06 22:45:03,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:03,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:03,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:03,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:03,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (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 [2020-11-06 22:45:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:04,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:04,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:45:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:04,395 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:04,396 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:45:04,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:04 BoogieIcfgContainer [2020-11-06 22:45:04,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:04,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:04,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:04,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:04,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:03" (1/3) ... [2020-11-06 22:45:04,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c4b23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:04, skipping insertion in model container [2020-11-06 22:45:04,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:03" (2/3) ... [2020-11-06 22:45:04,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c4b23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:04, skipping insertion in model container [2020-11-06 22:45:04,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:04" (3/3) ... [2020-11-06 22:45:04,409 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2020-11-06 22:45:04,428 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:04,432 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:04,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:04,528 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:04,529 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:04,529 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:04,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:04,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:04,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:04,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:04,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-06 22:45:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:45:04,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:04,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:04,596 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:04,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:04,614 INFO L82 PathProgramCache]: Analyzing trace with hash -283820943, now seen corresponding path program 1 times [2020-11-06 22:45:04,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:04,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469161473] [2020-11-06 22:45:04,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:04,776 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:04,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992612963] [2020-11-06 22:45:04,777 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 [2020-11-06 22:45:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:04,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-06 22:45:04,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:04,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469161473] [2020-11-06 22:45:04,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:04,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992612963] [2020-11-06 22:45:04,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:04,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-06 22:45:04,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204574003] [2020-11-06 22:45:04,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-06 22:45:04,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:04,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-06 22:45:04,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-06 22:45:04,933 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-06 22:45:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:04,961 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-11-06 22:45:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-06 22:45:04,962 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-06 22:45:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:04,972 INFO L225 Difference]: With dead ends: 47 [2020-11-06 22:45:04,972 INFO L226 Difference]: Without dead ends: 18 [2020-11-06 22:45:04,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-06 22:45:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-06 22:45:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-06 22:45:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-06 22:45:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-06 22:45:05,024 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2020-11-06 22:45:05,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:05,024 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-06 22:45:05,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-06 22:45:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-06 22:45:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:45:05,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:05,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:05,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-06 22:45:05,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 778430874, now seen corresponding path program 1 times [2020-11-06 22:45:05,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:05,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837810069] [2020-11-06 22:45:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:05,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:05,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900855643] [2020-11-06 22:45:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:45:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:05,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:45:05,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:05,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837810069] [2020-11-06 22:45:05,367 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:05,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900855643] [2020-11-06 22:45:05,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:05,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:45:05,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390479922] [2020-11-06 22:45:05,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:45:05,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:05,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:45:05,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:05,371 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2020-11-06 22:45:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:05,406 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-06 22:45:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:45:05,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:45:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:05,408 INFO L225 Difference]: With dead ends: 30 [2020-11-06 22:45:05,408 INFO L226 Difference]: Without dead ends: 23 [2020-11-06 22:45:05,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-06 22:45:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2020-11-06 22:45:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-06 22:45:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-06 22:45:05,415 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-11-06 22:45:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:05,416 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-06 22:45:05,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:45:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-06 22:45:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:45:05,417 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:05,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:05,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:05,631 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:05,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1656196298, now seen corresponding path program 1 times [2020-11-06 22:45:05,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:05,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178520176] [2020-11-06 22:45:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:05,650 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:05,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572696398] [2020-11-06 22:45:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:45:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:05,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:45:05,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:05,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178520176] [2020-11-06 22:45:05,804 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:05,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572696398] [2020-11-06 22:45:05,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:05,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:45:05,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387617504] [2020-11-06 22:45:05,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:45:05,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:05,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:45:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:45:05,807 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2020-11-06 22:45:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:05,858 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-06 22:45:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:45:05,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-06 22:45:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:05,860 INFO L225 Difference]: With dead ends: 34 [2020-11-06 22:45:05,861 INFO L226 Difference]: Without dead ends: 22 [2020-11-06 22:45:05,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-06 22:45:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-06 22:45:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-06 22:45:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-06 22:45:05,867 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-11-06 22:45:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:05,868 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-06 22:45:05,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:45:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-06 22:45:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:45:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:05,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:06,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:06,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash 574589345, now seen corresponding path program 1 times [2020-11-06 22:45:06,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:06,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236089737] [2020-11-06 22:45:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:06,118 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:06,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600381156] [2020-11-06 22:45:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:45:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:06,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-06 22:45:06,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:06,325 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:45:06,326 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,192 WARN L194 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 27 [2020-11-06 22:45:07,194 INFO L625 ElimStorePlain]: treesize reduction 401, result has 8.2 percent of original size [2020-11-06 22:45:07,195 INFO L515 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2020-11-06 22:45:07,195 INFO L515 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-11-06 22:45:07,195 INFO L515 ElimStorePlain]: Eliminatee v_prenex_14 vanished before elimination [2020-11-06 22:45:07,196 INFO L515 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2020-11-06 22:45:07,196 INFO L515 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2020-11-06 22:45:07,214 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2020-11-06 22:45:07,215 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:07,235 INFO L515 ElimStorePlain]: Eliminatee v_prenex_9 vanished before elimination [2020-11-06 22:45:07,238 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,238 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:497, output treesize:10 [2020-11-06 22:45:07,270 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-06 22:45:07,273 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,276 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:07,276 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,277 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-06 22:45:07,298 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:07,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236089737] [2020-11-06 22:45:07,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:07,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600381156] [2020-11-06 22:45:07,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:45:07,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-06 22:45:07,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401679880] [2020-11-06 22:45:07,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:45:07,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:07,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:45:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:45:07,330 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2020-11-06 22:45:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:07,538 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-11-06 22:45:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:45:07,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-06 22:45:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:07,540 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:45:07,540 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:45:07,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:45:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:45:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2020-11-06 22:45:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:45:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-06 22:45:07,548 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-11-06 22:45:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:07,548 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-06 22:45:07,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:45:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-06 22:45:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:45:07,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:07,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:07,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:07,763 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1275653923, now seen corresponding path program 1 times [2020-11-06 22:45:07,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:07,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791860936] [2020-11-06 22:45:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:07,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:07,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558179167] [2020-11-06 22:45:07,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:45:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:07,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-06 22:45:07,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:07,878 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-06 22:45:07,879 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,884 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:07,886 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,886 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2020-11-06 22:45:07,912 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-06 22:45:07,914 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:07,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:45:07,917 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-11-06 22:45:07,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:07,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791860936] [2020-11-06 22:45:07,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:07,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558179167] [2020-11-06 22:45:07,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:45:07,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-06 22:45:07,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726192980] [2020-11-06 22:45:07,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:45:07,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:07,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:45:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:07,971 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 9 states. [2020-11-06 22:45:08,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:08,258 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-11-06 22:45:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:45:08,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-11-06 22:45:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:08,260 INFO L225 Difference]: With dead ends: 43 [2020-11-06 22:45:08,260 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 22:45:08,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:45:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 22:45:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2020-11-06 22:45:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:45:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-06 22:45:08,268 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 19 [2020-11-06 22:45:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:08,268 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-06 22:45:08,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:45:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-11-06 22:45:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:45:08,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:08,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:08,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:08,471 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:08,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1880708950, now seen corresponding path program 2 times [2020-11-06 22:45:08,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:08,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281612679] [2020-11-06 22:45:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:08,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:08,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547714729] [2020-11-06 22:45:08,490 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 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 [2020-11-06 22:45:08,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:45:08,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:08,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-06 22:45:08,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:08,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281612679] [2020-11-06 22:45:08,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:08,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547714729] [2020-11-06 22:45:08,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:45:08,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-06 22:45:08,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220703305] [2020-11-06 22:45:08,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:45:08,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:08,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:45:08,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:08,595 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-11-06 22:45:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:08,641 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-11-06 22:45:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:45:08,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-06 22:45:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:08,643 INFO L225 Difference]: With dead ends: 46 [2020-11-06 22:45:08,643 INFO L226 Difference]: Without dead ends: 26 [2020-11-06 22:45:08,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:45:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-06 22:45:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-06 22:45:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:45:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-11-06 22:45:08,649 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-11-06 22:45:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:08,649 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-11-06 22:45:08,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:45:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-06 22:45:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:45:08,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:08,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:08,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:08,864 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:08,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:08,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1722599528, now seen corresponding path program 3 times [2020-11-06 22:45:08,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:08,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831428678] [2020-11-06 22:45:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:08,879 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:45:08,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401548994] [2020-11-06 22:45:08,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:45:09,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-06 22:45:09,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:45:09,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-06 22:45:09,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:45:09,087 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:45:09,087 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:09,610 WARN L194 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 28 [2020-11-06 22:45:09,612 INFO L625 ElimStorePlain]: treesize reduction 406, result has 10.0 percent of original size [2020-11-06 22:45:09,612 INFO L515 ElimStorePlain]: Eliminatee v_prenex_27 vanished before elimination [2020-11-06 22:45:09,621 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2020-11-06 22:45:09,622 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:09,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:09,648 INFO L515 ElimStorePlain]: Eliminatee |v_#memory_int_10| vanished before elimination [2020-11-06 22:45:09,648 INFO L515 ElimStorePlain]: Eliminatee v_prenex_25 vanished before elimination [2020-11-06 22:45:09,648 INFO L515 ElimStorePlain]: Eliminatee v_prenex_23 vanished before elimination [2020-11-06 22:45:09,649 INFO L515 ElimStorePlain]: Eliminatee v_prenex_21 vanished before elimination [2020-11-06 22:45:09,649 INFO L515 ElimStorePlain]: Eliminatee v_prenex_19 vanished before elimination [2020-11-06 22:45:09,653 INFO L547 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:45:09,653 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:513, output treesize:19 [2020-11-06 22:45:09,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:09,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:09,721 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,750 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:09,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:09,983 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,027 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,161 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,202 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,213 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,235 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:10,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,388 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,418 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-06 22:45:10,904 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2020-11-06 22:45:11,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,067 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,088 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,092 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,105 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,106 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,108 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,121 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,225 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:11,226 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 139 [2020-11-06 22:45:11,227 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,229 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,249 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:45:11,249 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,264 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:45:11,264 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,277 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:45:11,277 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,371 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:11,371 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 142 [2020-11-06 22:45:11,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,375 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,531 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-06 22:45:11,532 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:45:11,533 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 145 [2020-11-06 22:45:11,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:45:11,537 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-06 22:45:11,577 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 51 [2020-11-06 22:45:11,578 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:11,590 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-06 22:45:11,590 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-11-06 22:45:12,871 WARN L194 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-11-06 22:45:12,873 INFO L625 ElimStorePlain]: treesize reduction 274, result has 69.4 percent of original size [2020-11-06 22:45:12,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:12,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:12,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:13,022 INFO L547 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 16 dim-0 vars, and 4 xjuncts. [2020-11-06 22:45:13,022 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:1285, output treesize:528 [2020-11-06 22:45:13,039 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:13,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-06 22:45:13,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831428678] [2020-11-06 22:45:13,070 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:45:13,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401548994] [2020-11-06 22:45:13,071 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-11-06 22:45:13,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:13,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-06 22:45:13,071 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-11-06 22:45:13,071 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:13,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:45:13,309 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-06 22:45:13,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:13 BoogieIcfgContainer [2020-11-06 22:45:13,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:13,314 INFO L168 Benchmark]: Toolchain (without parser) took 9661.14 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.2 MB in the beginning and 120.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 101.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:13,317 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:13,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.27 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 119.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:13,327 INFO L168 Benchmark]: Boogie Preprocessor took 43.08 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:13,328 INFO L168 Benchmark]: RCFGBuilder took 424.41 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 134.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:13,328 INFO L168 Benchmark]: TraceAbstraction took 8910.56 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 134.0 MB in the beginning and 120.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 105.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:13,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.27 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 119.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.08 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.41 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 134.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8910.56 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 134.0 MB in the beginning and 120.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 105.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] unsigned int N_LIN=1; [L16] unsigned int N_COL=1; [L17] unsigned int j,k; [L18] int matriz[N_COL][N_LIN], maior; [L20] maior = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE j=maior [L27] EXPR matriz[j][k] [L27] maior = matriz[j][k] [L22] k++ [L22] COND FALSE !(k=maior [L27] EXPR matriz[j][k] [L27] maior = matriz[j][k] [L22] k++ [L22] COND FALSE !(k