/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-MemCleanup-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 18:51:45,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 18:51:45,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 18:51:45,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 18:51:45,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 18:51:45,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 18:51:45,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 18:51:45,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 18:51:45,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 18:51:45,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 18:51:45,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 18:51:45,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 18:51:45,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 18:51:45,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 18:51:45,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 18:51:45,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 18:51:45,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 18:51:45,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 18:51:45,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 18:51:45,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 18:51:45,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 18:51:45,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 18:51:45,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 18:51:45,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 18:51:45,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 18:51:45,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 18:51:45,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 18:51:45,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 18:51:45,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 18:51:45,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 18:51:45,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 18:51:45,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 18:51:45,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 18:51:45,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 18:51:45,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 18:51:45,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 18:51:45,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 18:51:45,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 18:51:45,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 18:51:45,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 18:51:45,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 18:51:45,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-64bit-Automizer_Default.epf [2020-12-22 18:51:45,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 18:51:45,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 18:51:45,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 18:51:45,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 18:51:45,317 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 18:51:45,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 18:51:45,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 18:51:45,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 18:51:45,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 18:51:45,319 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 18:51:45,320 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 18:51:45,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 18:51:45,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 18:51:45,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 18:51:45,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 18:51:45,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 18:51:45,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 18:51:45,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 18:51:45,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 18:51:45,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 18:51:45,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 18:51:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 18:51:45,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 18:51:45,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 18:51:45,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 18:51:45,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 18:51:45,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 18:51:45,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 18:51:45,746 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 18:51:45,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2020-12-22 18:51:45,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59c9734c/dd76712f5a8445e1b0673e03e99c2a51/FLAG814430e63 [2020-12-22 18:51:46,623 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 18:51:46,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2020-12-22 18:51:46,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59c9734c/dd76712f5a8445e1b0673e03e99c2a51/FLAG814430e63 [2020-12-22 18:51:46,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59c9734c/dd76712f5a8445e1b0673e03e99c2a51 [2020-12-22 18:51:46,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 18:51:46,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 18:51:46,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 18:51:46,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 18:51:46,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 18:51:46,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:51:46" (1/1) ... [2020-12-22 18:51:46,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ed779a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:46, skipping insertion in model container [2020-12-22 18:51:46,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:51:46" (1/1) ... [2020-12-22 18:51:46,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 18:51:46,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 18:51:47,281 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2020-12-22 18:51:47,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:51:47,313 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 18:51:47,392 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2020-12-22 18:51:47,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 18:51:47,462 INFO L208 MainTranslator]: Completed translation [2020-12-22 18:51:47,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47 WrapperNode [2020-12-22 18:51:47,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 18:51:47,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 18:51:47,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 18:51:47,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 18:51:47,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 18:51:47,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 18:51:47,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 18:51:47,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 18:51:47,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (1/1) ... [2020-12-22 18:51:47,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 18:51:47,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 18:51:47,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 18:51:47,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 18:51:47,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (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 [2020-12-22 18:51:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 18:51:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 18:51:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 18:51:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 18:51:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 18:51:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 18:51:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 18:51:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 18:51:47,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 18:51:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 18:51:48,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 18:51:48,407 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-22 18:51:48,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:51:48 BoogieIcfgContainer [2020-12-22 18:51:48,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 18:51:48,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 18:51:48,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 18:51:48,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 18:51:48,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:51:46" (1/3) ... [2020-12-22 18:51:48,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d24a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:51:48, skipping insertion in model container [2020-12-22 18:51:48,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:51:47" (2/3) ... [2020-12-22 18:51:48,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d24a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:51:48, skipping insertion in model container [2020-12-22 18:51:48,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:51:48" (3/3) ... [2020-12-22 18:51:48,426 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-12-22 18:51:48,434 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 18:51:48,444 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations. [2020-12-22 18:51:48,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2020-12-22 18:51:48,496 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 18:51:48,496 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 18:51:48,497 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 18:51:48,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 18:51:48,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 18:51:48,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 18:51:48,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 18:51:48,497 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 18:51:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-22 18:51:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 18:51:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:48,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 18:51:48,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2020-12-22 18:51:48,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:48,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541850888] [2020-12-22 18:51:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:48,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541850888] [2020-12-22 18:51:48,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:48,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:51:48,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305625132] [2020-12-22 18:51:48,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:48,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:48,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:48,783 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-12-22 18:51:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:49,037 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2020-12-22 18:51:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:49,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 18:51:49,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:49,057 INFO L225 Difference]: With dead ends: 144 [2020-12-22 18:51:49,057 INFO L226 Difference]: Without dead ends: 139 [2020-12-22 18:51:49,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-22 18:51:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 80. [2020-12-22 18:51:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-22 18:51:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-12-22 18:51:49,125 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 5 [2020-12-22 18:51:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:49,125 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-12-22 18:51:49,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-12-22 18:51:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 18:51:49,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:49,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 18:51:49,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 18:51:49,127 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:49,129 INFO L82 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2020-12-22 18:51:49,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:49,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056348490] [2020-12-22 18:51:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:49,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056348490] [2020-12-22 18:51:49,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:49,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 18:51:49,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024251390] [2020-12-22 18:51:49,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:49,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:49,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:49,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,193 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 3 states. [2020-12-22 18:51:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:49,323 INFO L93 Difference]: Finished difference Result 134 states and 150 transitions. [2020-12-22 18:51:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:49,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 18:51:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:49,326 INFO L225 Difference]: With dead ends: 134 [2020-12-22 18:51:49,326 INFO L226 Difference]: Without dead ends: 134 [2020-12-22 18:51:49,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-22 18:51:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 75. [2020-12-22 18:51:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 18:51:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-12-22 18:51:49,337 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 5 [2020-12-22 18:51:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:49,337 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-12-22 18:51:49,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-12-22 18:51:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 18:51:49,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:49,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 18:51:49,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 18:51:49,339 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 889673528, now seen corresponding path program 1 times [2020-12-22 18:51:49,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:49,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95436194] [2020-12-22 18:51:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:49,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95436194] [2020-12-22 18:51:49,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:49,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:51:49,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34836208] [2020-12-22 18:51:49,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:49,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:49,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,376 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 3 states. [2020-12-22 18:51:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:49,421 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-12-22 18:51:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:49,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 18:51:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:49,423 INFO L225 Difference]: With dead ends: 90 [2020-12-22 18:51:49,423 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 18:51:49,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 18:51:49,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2020-12-22 18:51:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 18:51:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-12-22 18:51:49,432 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 6 [2020-12-22 18:51:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:49,433 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-12-22 18:51:49,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-12-22 18:51:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 18:51:49,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:49,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:49,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 18:51:49,434 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:49,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1959623991, now seen corresponding path program 1 times [2020-12-22 18:51:49,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:49,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524151242] [2020-12-22 18:51:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:49,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524151242] [2020-12-22 18:51:49,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:49,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 18:51:49,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162635829] [2020-12-22 18:51:49,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 18:51:49,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:49,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 18:51:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,545 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 3 states. [2020-12-22 18:51:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:49,580 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-12-22 18:51:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 18:51:49,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-22 18:51:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:49,584 INFO L225 Difference]: With dead ends: 87 [2020-12-22 18:51:49,584 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 18:51:49,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 18:51:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 18:51:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-22 18:51:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 18:51:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-12-22 18:51:49,598 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 14 [2020-12-22 18:51:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:49,600 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-12-22 18:51:49,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 18:51:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-12-22 18:51:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 18:51:49,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:49,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:49,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 18:51:49,602 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash 866232140, now seen corresponding path program 1 times [2020-12-22 18:51:49,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:49,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763675972] [2020-12-22 18:51:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:49,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763675972] [2020-12-22 18:51:49,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520997981] [2020-12-22 18:51:49,677 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 [2020-12-22 18:51:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:49,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 18:51:49,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:49,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:49,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 18:51:49,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501972458] [2020-12-22 18:51:49,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:51:49,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:49,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:51:49,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:51:49,856 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 5 states. [2020-12-22 18:51:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:49,881 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2020-12-22 18:51:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:51:49,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 18:51:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:49,883 INFO L225 Difference]: With dead ends: 102 [2020-12-22 18:51:49,883 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 18:51:49,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:51:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 18:51:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2020-12-22 18:51:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 18:51:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-12-22 18:51:49,891 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 18 [2020-12-22 18:51:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:49,891 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-12-22 18:51:49,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:51:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-12-22 18:51:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 18:51:49,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:49,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:50,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:50,107 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:50,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:50,109 INFO L82 PathProgramCache]: Analyzing trace with hash 829454667, now seen corresponding path program 1 times [2020-12-22 18:51:50,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:50,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417618655] [2020-12-22 18:51:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:50,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417618655] [2020-12-22 18:51:50,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7244997] [2020-12-22 18:51:50,268 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 [2020-12-22 18:51:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:51:50,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:50,464 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-22 18:51:50,465 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:50,468 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:50,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:50,469 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 18:51:50,510 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:50,510 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 28 [2020-12-22 18:51:50,514 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:50,527 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-12-22 18:51:50,529 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:50,530 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-22 18:51:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:50,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:50,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2020-12-22 18:51:50,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868774656] [2020-12-22 18:51:50,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 18:51:50,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:50,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 18:51:50,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 18:51:50,553 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 5 states. [2020-12-22 18:51:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:50,780 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-12-22 18:51:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 18:51:50,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 18:51:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:50,783 INFO L225 Difference]: With dead ends: 119 [2020-12-22 18:51:50,783 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 18:51:50,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:51:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 18:51:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 87. [2020-12-22 18:51:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 18:51:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-12-22 18:51:50,803 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 26 [2020-12-22 18:51:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:50,803 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-12-22 18:51:50,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 18:51:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-12-22 18:51:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 18:51:50,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:50,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:51,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:51,020 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:51,021 INFO L82 PathProgramCache]: Analyzing trace with hash 829454668, now seen corresponding path program 1 times [2020-12-22 18:51:51,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:51,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662116785] [2020-12-22 18:51:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:51,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662116785] [2020-12-22 18:51:51,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561305631] [2020-12-22 18:51:51,213 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 [2020-12-22 18:51:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:51,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 18:51:51,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:51,323 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-22 18:51:51,324 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:51,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:51,330 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:51,330 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 18:51:51,393 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:51,394 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 28 [2020-12-22 18:51:51,397 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:51,415 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-22 18:51:51,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:51:51,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-12-22 18:51:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:51,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:51,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-12-22 18:51:51,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473254679] [2020-12-22 18:51:51,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:51:51,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:51,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:51:51,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:51:51,455 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 7 states. [2020-12-22 18:51:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:51,641 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-22 18:51:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 18:51:51,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-12-22 18:51:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:51,643 INFO L225 Difference]: With dead ends: 118 [2020-12-22 18:51:51,643 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 18:51:51,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:51:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 18:51:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2020-12-22 18:51:51,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 18:51:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-12-22 18:51:51,649 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 26 [2020-12-22 18:51:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:51,650 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-12-22 18:51:51,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:51:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-12-22 18:51:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 18:51:51,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:51,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:51,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:51,867 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1350534816, now seen corresponding path program 2 times [2020-12-22 18:51:51,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:51,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466958008] [2020-12-22 18:51:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:51,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466958008] [2020-12-22 18:51:51,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668688789] [2020-12-22 18:51:51,968 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 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 [2020-12-22 18:51:52,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:51:52,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:51:52,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 18:51:52,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:52,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:52,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 18:51:52,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160535147] [2020-12-22 18:51:52,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:51:52,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:52,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:51:52,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:52,187 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 8 states. [2020-12-22 18:51:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:52,356 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-12-22 18:51:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:51:52,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-12-22 18:51:52,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:52,358 INFO L225 Difference]: With dead ends: 111 [2020-12-22 18:51:52,358 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 18:51:52,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-12-22 18:51:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 18:51:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-12-22 18:51:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 18:51:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-12-22 18:51:52,364 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 30 [2020-12-22 18:51:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:52,365 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-12-22 18:51:52,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:51:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-12-22 18:51:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 18:51:52,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:52,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:52,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:52,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:52,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:52,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1723802484, now seen corresponding path program 1 times [2020-12-22 18:51:52,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:52,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591557695] [2020-12-22 18:51:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:52,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591557695] [2020-12-22 18:51:52,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225245284] [2020-12-22 18:51:52,674 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 [2020-12-22 18:51:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:52,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 18:51:52,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:52,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:52,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 18:51:52,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290290890] [2020-12-22 18:51:52,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:51:52,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:52,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:51:52,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:51:52,842 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 7 states. [2020-12-22 18:51:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:52,879 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2020-12-22 18:51:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:51:52,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-12-22 18:51:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:52,880 INFO L225 Difference]: With dead ends: 124 [2020-12-22 18:51:52,881 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 18:51:52,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:51:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 18:51:52,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2020-12-22 18:51:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-22 18:51:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-12-22 18:51:52,886 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 44 [2020-12-22 18:51:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:52,887 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-12-22 18:51:52,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:51:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-12-22 18:51:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 18:51:52,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:52,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:53,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:53,104 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2030128290, now seen corresponding path program 2 times [2020-12-22 18:51:53,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:53,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869883079] [2020-12-22 18:51:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:53,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869883079] [2020-12-22 18:51:53,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029056367] [2020-12-22 18:51:53,288 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 [2020-12-22 18:51:53,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 18:51:53,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 18:51:53,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 18:51:53,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 18:51:53,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:53,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-22 18:51:53,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102813058] [2020-12-22 18:51:53,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 18:51:53,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 18:51:53,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:53,530 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 8 states. [2020-12-22 18:51:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:53,577 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-12-22 18:51:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:51:53,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-12-22 18:51:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:53,579 INFO L225 Difference]: With dead ends: 125 [2020-12-22 18:51:53,579 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 18:51:53,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 18:51:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 18:51:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-22 18:51:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 18:51:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-12-22 18:51:53,584 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 57 [2020-12-22 18:51:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:53,584 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-12-22 18:51:53,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 18:51:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-12-22 18:51:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 18:51:53,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:53,587 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:53,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:53,802 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:53,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1121714636, now seen corresponding path program 3 times [2020-12-22 18:51:53,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:53,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463090871] [2020-12-22 18:51:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-12-22 18:51:53,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463090871] [2020-12-22 18:51:53,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:53,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:51:53,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611952336] [2020-12-22 18:51:53,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:51:53,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:53,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:51:53,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:51:53,936 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 6 states. [2020-12-22 18:51:54,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:54,214 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2020-12-22 18:51:54,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:51:54,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 18:51:54,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:54,217 INFO L225 Difference]: With dead ends: 171 [2020-12-22 18:51:54,218 INFO L226 Difference]: Without dead ends: 171 [2020-12-22 18:51:54,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:51:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-22 18:51:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 152. [2020-12-22 18:51:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 18:51:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2020-12-22 18:51:54,235 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 70 [2020-12-22 18:51:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:54,236 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2020-12-22 18:51:54,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:51:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2020-12-22 18:51:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 18:51:54,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:54,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:54,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 18:51:54,243 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:54,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:54,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1121714635, now seen corresponding path program 1 times [2020-12-22 18:51:54,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:54,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532114311] [2020-12-22 18:51:54,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-12-22 18:51:54,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532114311] [2020-12-22 18:51:54,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:54,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 18:51:54,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050141976] [2020-12-22 18:51:54,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 18:51:54,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:54,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 18:51:54,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 18:51:54,402 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 6 states. [2020-12-22 18:51:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:54,593 INFO L93 Difference]: Finished difference Result 171 states and 193 transitions. [2020-12-22 18:51:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 18:51:54,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 18:51:54,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:54,597 INFO L225 Difference]: With dead ends: 171 [2020-12-22 18:51:54,597 INFO L226 Difference]: Without dead ends: 171 [2020-12-22 18:51:54,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 18:51:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-22 18:51:54,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 146. [2020-12-22 18:51:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 18:51:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2020-12-22 18:51:54,603 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 70 [2020-12-22 18:51:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:54,603 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2020-12-22 18:51:54,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 18:51:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2020-12-22 18:51:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 18:51:54,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:54,605 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:54,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 18:51:54,605 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1909311012, now seen corresponding path program 1 times [2020-12-22 18:51:54,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:54,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342651600] [2020-12-22 18:51:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-12-22 18:51:54,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342651600] [2020-12-22 18:51:54,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 18:51:54,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 18:51:54,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983850492] [2020-12-22 18:51:54,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 18:51:54,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:54,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 18:51:54,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 18:51:54,714 INFO L87 Difference]: Start difference. First operand 146 states and 168 transitions. Second operand 7 states. [2020-12-22 18:51:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:54,893 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-12-22 18:51:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 18:51:54,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-12-22 18:51:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:54,895 INFO L225 Difference]: With dead ends: 152 [2020-12-22 18:51:54,895 INFO L226 Difference]: Without dead ends: 152 [2020-12-22 18:51:54,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 18:51:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-22 18:51:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2020-12-22 18:51:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 18:51:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2020-12-22 18:51:54,899 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 74 [2020-12-22 18:51:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:54,900 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2020-12-22 18:51:54,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 18:51:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2020-12-22 18:51:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 18:51:54,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:54,901 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:54,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 18:51:54,901 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:54,902 INFO L82 PathProgramCache]: Analyzing trace with hash -522705552, now seen corresponding path program 1 times [2020-12-22 18:51:54,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:54,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846208576] [2020-12-22 18:51:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-22 18:51:55,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846208576] [2020-12-22 18:51:55,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678388817] [2020-12-22 18:51:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 18:51:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:55,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 18:51:55,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:55,373 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-22 18:51:55,374 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,377 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,377 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 18:51:55,411 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,413 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 18:51:55,418 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:51:55,423 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,428 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,428 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2020-12-22 18:51:55,460 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2020-12-22 18:51:55,460 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,486 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,486 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-22 18:51:55,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-22 18:51:55,529 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,542 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,543 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,544 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-22 18:51:55,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,603 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2020-12-22 18:51:55,608 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,623 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,623 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:27 [2020-12-22 18:51:55,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,645 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-12-22 18:51:55,647 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,659 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,660 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,660 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:27 [2020-12-22 18:51:55,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,679 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-12-22 18:51:55,681 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,693 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:27 [2020-12-22 18:51:55,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,714 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-12-22 18:51:55,717 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,730 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,730 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:23 [2020-12-22 18:51:55,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:51:55,890 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,891 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-12-22 18:51:55,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,898 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:55,900 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:55,901 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:3 [2020-12-22 18:51:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 18:51:55,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:55,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 19 [2020-12-22 18:51:55,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863235582] [2020-12-22 18:51:55,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 18:51:55,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:55,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 18:51:55,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-12-22 18:51:55,922 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 19 states. [2020-12-22 18:51:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:57,274 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2020-12-22 18:51:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 18:51:57,274 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-12-22 18:51:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:57,276 INFO L225 Difference]: With dead ends: 177 [2020-12-22 18:51:57,276 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 18:51:57,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=251, Invalid=871, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 18:51:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 18:51:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2020-12-22 18:51:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 18:51:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2020-12-22 18:51:57,282 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 78 [2020-12-22 18:51:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:57,283 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2020-12-22 18:51:57,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 18:51:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2020-12-22 18:51:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 18:51:57,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:57,284 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:57,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 18:51:57,499 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:57,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1817927893, now seen corresponding path program 1 times [2020-12-22 18:51:57,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:57,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332190210] [2020-12-22 18:51:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 65 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 18:51:57,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332190210] [2020-12-22 18:51:57,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817173186] [2020-12-22 18:51:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:57,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 18:51:57,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:58,031 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-12-22 18:51:58,032 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-22 18:51:58,056 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,056 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 18:51:58,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:51:58,068 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,069 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,070 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,070 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-12-22 18:51:58,092 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 18:51:58,093 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,098 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,099 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,099 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-22 18:51:58,149 INFO L348 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-12-22 18:51:58,150 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 1 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 18:51:58,154 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,162 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,163 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:14 [2020-12-22 18:51:58,182 INFO L348 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2020-12-22 18:51:58,183 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 1 case distinctions, treesize of input 29 treesize of output 13 [2020-12-22 18:51:58,185 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,189 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,190 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,191 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2020-12-22 18:51:58,211 INFO L348 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2020-12-22 18:51:58,212 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 1 case distinctions, treesize of input 29 treesize of output 13 [2020-12-22 18:51:58,215 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,220 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:14 [2020-12-22 18:51:58,238 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 29 treesize of output 13 [2020-12-22 18:51:58,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,245 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:9 [2020-12-22 18:51:58,352 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 19 treesize of output 7 [2020-12-22 18:51:58,353 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,355 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:58,356 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:58,356 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-12-22 18:51:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 18:51:58,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:51:58,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 20 [2020-12-22 18:51:58,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84903038] [2020-12-22 18:51:58,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 18:51:58,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:51:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 18:51:58,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-12-22 18:51:58,381 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 20 states. [2020-12-22 18:51:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:51:59,204 INFO L93 Difference]: Finished difference Result 177 states and 195 transitions. [2020-12-22 18:51:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 18:51:59,205 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 80 [2020-12-22 18:51:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:51:59,206 INFO L225 Difference]: With dead ends: 177 [2020-12-22 18:51:59,207 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 18:51:59,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 18:51:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 18:51:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2020-12-22 18:51:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 18:51:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2020-12-22 18:51:59,212 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 80 [2020-12-22 18:51:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:51:59,212 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2020-12-22 18:51:59,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 18:51:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2020-12-22 18:51:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 18:51:59,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:51:59,214 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:51:59,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 18:51:59,429 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:51:59,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:51:59,430 INFO L82 PathProgramCache]: Analyzing trace with hash 182605743, now seen corresponding path program 1 times [2020-12-22 18:51:59,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:51:59,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158138421] [2020-12-22 18:51:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:51:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-22 18:51:59,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158138421] [2020-12-22 18:51:59,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396335150] [2020-12-22 18:51:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 18:51:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 18:51:59,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 18:51:59,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 18:51:59,946 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,947 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 18:51:59,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:51:59,952 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 18:51:59,954 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,959 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:51:59,960 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:51:59,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:12 [2020-12-22 18:52:00,038 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-12-22 18:52:00,039 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:00,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:00,049 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:00,049 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2020-12-22 18:52:00,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:00,100 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 18:52:00,103 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:00,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:00,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 18:52:00,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-22 18:52:00,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:00,221 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:00,222 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 110 [2020-12-22 18:52:00,230 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-22 18:52:00,231 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 18:52:00,232 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 18:52:00,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:00,246 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-22 18:52:00,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:61, output treesize:51 [2020-12-22 18:52:00,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:00,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 18:52:00,551 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 18:52:00,552 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 81 [2020-12-22 18:52:00,556 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-22 18:52:00,557 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 18:52:00,558 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-22 18:52:00,562 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-12-22 18:52:00,626 INFO L625 ElimStorePlain]: treesize reduction 15, result has 61.5 percent of original size [2020-12-22 18:52:00,632 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 18:52:00,634 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-22 18:52:00,635 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:63, output treesize:16 [2020-12-22 18:52:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 18:52:00,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 18:52:00,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2020-12-22 18:52:00,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406331661] [2020-12-22 18:52:00,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-22 18:52:00,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 18:52:00,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-22 18:52:00,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2020-12-22 18:52:00,729 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand 25 states. [2020-12-22 18:52:03,229 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 18:52:03,444 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-12-22 18:52:03,684 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2020-12-22 18:52:03,941 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-12-22 18:52:04,329 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-12-22 18:52:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 18:52:04,709 INFO L93 Difference]: Finished difference Result 164 states and 178 transitions. [2020-12-22 18:52:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 18:52:04,710 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 81 [2020-12-22 18:52:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 18:52:04,711 INFO L225 Difference]: With dead ends: 164 [2020-12-22 18:52:04,711 INFO L226 Difference]: Without dead ends: 160 [2020-12-22 18:52:04,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=346, Invalid=1460, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 18:52:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-22 18:52:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2020-12-22 18:52:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 18:52:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2020-12-22 18:52:04,726 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 81 [2020-12-22 18:52:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 18:52:04,726 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2020-12-22 18:52:04,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-22 18:52:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2020-12-22 18:52:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 18:52:04,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 18:52:04,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 18:52:04,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 18:52:04,941 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-12-22 18:52:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 18:52:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1021407014, now seen corresponding path program 1 times [2020-12-22 18:52:04,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 18:52:04,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645441019] [2020-12-22 18:52:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 18:52:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 18:52:05,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 18:52:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 18:52:05,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 18:52:05,157 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 18:52:05,157 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 18:52:05,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 18:52:05,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:52:05 BoogieIcfgContainer [2020-12-22 18:52:05,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 18:52:05,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 18:52:05,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 18:52:05,229 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 18:52:05,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:51:48" (3/4) ... [2020-12-22 18:52:05,232 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 18:52:05,302 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-ext3-properties/dll_nullified-1.i-witness.graphml [2020-12-22 18:52:05,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 18:52:05,303 INFO L168 Benchmark]: Toolchain (without parser) took 18461.34 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 125.0 MB in the beginning and 179.4 MB in the end (delta: -54.3 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,303 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 18:52:05,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 102.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.74 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 132.7 MB in the end (delta: -30.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,305 INFO L168 Benchmark]: Boogie Preprocessor took 35.05 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 131.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,305 INFO L168 Benchmark]: RCFGBuilder took 812.27 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 100.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,305 INFO L168 Benchmark]: TraceAbstraction took 16812.32 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 100.7 MB in the beginning and 185.1 MB in the end (delta: -84.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,306 INFO L168 Benchmark]: Witness Printer took 73.45 ms. Allocated memory is still 262.1 MB. Free memory was 185.1 MB in the beginning and 179.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 18:52:05,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 616.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 102.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 100.74 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 132.7 MB in the end (delta: -30.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.05 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 131.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 812.27 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 100.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16812.32 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 100.7 MB in the beginning and 185.1 MB in the end (delta: -84.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Witness Printer took 73.45 ms. Allocated memory is still 262.1 MB. Free memory was 185.1 MB in the beginning and 179.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; [L579] DLL head = ((void *)0); [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND FALSE !(\read(head)) [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND FALSE !(len > 0) [L596] return head; [L600] DLL head = dll_create(len); [L601] head->next [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 35 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.6s, OverallIterations: 17, TraceHistogramMax: 5, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1123 SDtfs, 4858 SDslu, 2742 SDs, 0 SdLazy, 2225 SolverSat, 261 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 622 GetRequests, 441 SyntacticMatches, 15 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 375 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1206 NumberOfCodeBlocks, 1206 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1099 ConstructedInterpolants, 5 QuantifiedInterpolants, 288258 SizeOfPredicates, 66 NumberOfNonLiveVariables, 2443 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 1084/1491 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 incorrect! Received shutdown request...